2. As follows:
Travel problems:
1.a and B are apart100km. Two people ride bicycles from A and B respectively. A's speed is 23 kilometers per hour, and B's speed is 2 1 kilometer. Riding 1 hour, B starts from B. How many hours did it take A to meet B?
Party A and Party B set out from A and B, which are 440 kilometers apart, and walked towards each other. The speed of A is 1.2 times that of B. Four hours later, they meet and ask for the speed of B. ..
3.A walks from place A at 6 am and arrives at place B at 5 pm. B start from place a by bike in the morning 10 and arrive at place b at 3 pm. When will B catch up with A?
4. It took 18 minutes for a train traveling at a constant speed to enter a 320-meter-long tunnel and 10 minutes for a fixed lamp at the top of the tunnel to shine on the train. How long is this train?
The distance between a and b is 4 16 km. A car travels from place A to place B at a speed of 32 kilometers per hour. After the car leaves 1 hour, a motorcycle travels from B to A at 1.5 times the speed of the car. How many hours before the motorcycle and the car met?
Equal product exchange:
1. Forging three cylindrical parts with a diameter of 2 cm and a height of 16 cm with a round steel with a diameter of 4 cm, how long does it take to cut the round steel?
2. Cast a 10 shot with a diameter of 12 cm with a cylindrical lead column. How long should the lead column be cut (the volume of the ball is 4π)?
Mathematical problems:
1. The sum of every two of some three numbers is 27, 28 and 29 respectively. Find these three numbers.
2. A three-digit number, the unit digit is 5. If you put 5 on the far left of this three-digit number, the three-digit number obtained is 95 times less than the original number, and the original three-digit number is found.
Engineering problems:
1. Master and apprentice process parts together, and each part can earn 1.8 yuan. After processing 10 days, it earned 576 yuan. It is known that the master can process 20 parts a day, and the number of parts required to be processed by the land every day is required.
2. To finish a project within a deadline, team A can finish it in 4 days, while team B needs 10 days. Now, after working in Team A for 2 days, Team B will finish the rest of the work on time. How many days will it take to finish as planned?
Profit problem:
1. It is understood that the sales of individual clothing stores can be profitable as long as they are 20% higher than the purchase price, but bosses often bid 50%~ 100% higher than the purchase price. If you are going to buy a dress with a price tag of 500 yuan, to what extent should you make a counter-offer?
2. A commodity will be sold at a discount because of the change of the plane. If you sell at a 15% discount on the pricing, you will lose 25 yuan; if you sell at a 10% discount on the pricing, you will earn 20 yuan. What is the price of this commodity?
I go to the store to buy exercise books every month. The shopkeeper told her that I would give her a 20% discount if I bought more. Buy 20 copies every month at the price of 1.6 yuan. Do you know what the original price is?
Lily's mother went to Parkson Shopping Center and bought her a beautiful sweater. The salesman said, "This sweater was 20% off two days ago. Today, the price is reduced by 10% on the basis of 20% discount, and only 144 yuan is needed. " Lily quickly worked out the original price of this sweater. Do you know how much it costs?
The purchase price of a commodity is 2000 yuan, and the price is 3000 yuan. The store requires a discount at the selling price, and the profit rate is not less than 5%. What's the lowest discount for salespeople to sell this product?
Interest rate problem:
1. Deposit 100 yuan into the bank on a regular basis according to 1 year. If the principal and interest (before tax) *** 10 1.98 yuan can be obtained at maturity, what percentage (in%) is the annual interest of this deposit? What percentage of the deposit is the monthly interest (expressed in%)?
2. An enterprise borrows a sum from a bank, and the agreed repayment period is 2 years, with an annual interest rate of 6% (excluding compound interest). The enterprise immediately used the money to buy a batch of goods and sold them at a price 37% higher than the purchase price. After selling for two years, the proceeds were used to repay the principal and interest of the loan, leaving 50 thousand. Q: What's the total?
3. The tax calculation method of deposit interest stipulated by the state is: interest tax = interest ×20%. The annual interest rate of one-year time deposit in the bank is 2.2%. Xiao Gang took out the principal and interest due in one year and paid the interest tax in 4.5 yuan. How much did Xiaogang deposit in the bank a year?
4. Li Ming deposited 2000 yuan and 1 000 yuan in two ways respectively. A year later, he took them all out. After deducting interest income, he can get interest of 43.92 yuan. It is known that the interest rates of both kinds of savings are 3.24%. What is the annual interest rate of these two kinds of savings? (Prompt: Income tax on interest paid by citizens = interest amount ×20%)
Travel problems:
1.a and B are apart100km. Two people ride bicycles from A and B respectively. A's speed is 23 kilometers per hour, and B's speed is 2 1 kilometer. Riding 1 hour, B starts from B. How many hours did it take A to meet B?
Party A and Party B set out from A and B, which are 440 kilometers apart, and walked towards each other. The speed of A is 1.2 times that of B. Four hours later, they meet and ask for the speed of B. ..
3.A walks from place A at 6 am and arrives at place B at 5 pm. B start from place a by bike in the morning 10 and arrive at place b at 3 pm. When will B catch up with A?
4. It took 18 minutes for a train traveling at a constant speed to enter a 320-meter-long tunnel and 10 minutes for a fixed lamp at the top of the tunnel to shine on the train. How long is this train?
The distance between a and b is 4 16 km. A car travels from place A to place B at a speed of 32 kilometers per hour. After the car leaves 1 hour, a motorcycle travels from B to A at 1.5 times the speed of the car. How many hours before the motorcycle and the car met?
Equal product exchange:
1. Forging three cylindrical parts with a diameter of 2 cm and a height of 16 cm with a round steel with a diameter of 4 cm, how long does it take to cut the round steel?
2. Cast a 10 shot with a diameter of 12 cm with a cylindrical lead column. How long should the lead column be cut (the volume of the ball is 4π)?
Mathematical problems:
1. The sum of every two of some three numbers is 27, 28 and 29 respectively. Find these three numbers.
2. A three-digit number, the unit digit is 5. If you put 5 on the far left of this three-digit number, the three-digit number obtained is 95 times less than the original number, and the original three-digit number is found.
Engineering problems:
1. Master and apprentice process parts together, and each part can earn 1.8 yuan. After processing 10 days, it earned 576 yuan. It is known that the master can process 20 parts a day, and the number of parts required to be processed by the land every day is required.
2. To finish a project within a deadline, team A can finish it in 4 days, while team B needs 10 days. Now, after working in Team A for 2 days, Team B will finish the rest of the work on time. How many days will it take to finish as planned?
Profit problem:
1. It is understood that the sales of individual clothing stores can be profitable as long as they are 20% higher than the purchase price, but bosses often bid 50%~ 100% higher than the purchase price. If you are going to buy a dress with a price tag of 500 yuan, to what extent should you make a counter-offer?
2. A commodity will be sold at a discount because of the change of the plane. If you sell at a 15% discount on the pricing, you will lose 25 yuan; if you sell at a 10% discount on the pricing, you will earn 20 yuan. What is the price of this commodity?
I go to the store to buy exercise books every month. The shopkeeper told her that I would give her a 20% discount if I bought more. Buy 20 copies every month at the price of 1.6 yuan. Do you know what the original price is?
Lily's mother went to Parkson Shopping Center and bought her a beautiful sweater. The salesman said, "This sweater was 20% off two days ago. Today, the price is reduced by 10% on the basis of 20% discount, and only 144 yuan is needed. " Lily quickly worked out the original price of this sweater. Do you know how much it costs?
The purchase price of a commodity is 2000 yuan, and the price is 3000 yuan. The store requires a discount at the selling price, and the profit rate is not less than 5%. What's the lowest discount for salespeople to sell this product?
Interest rate problem:
1. Deposit 100 yuan into the bank on a regular basis according to 1 year. If the principal and interest (before tax) *** 10 1.98 yuan can be obtained at maturity, what percentage (in%) is the annual interest of this deposit? What percentage of the deposit is the monthly interest (expressed in%)?
2. An enterprise borrows a sum from a bank, and the agreed repayment period is 2 years, with an annual interest rate of 6% (excluding compound interest). The enterprise immediately used the money to buy a batch of goods and sold them at a price 37% higher than the purchase price. After selling for two years, the proceeds were used to repay the principal and interest of the loan, leaving 50 thousand. Q: What's the total?
3. The tax calculation method of deposit interest stipulated by the state is: interest tax = interest ×20%. The annual interest rate of one-year time deposit in the bank is 2.2%. Xiao Gang took out the principal and interest due in one year and paid the interest tax in 4.5 yuan. How much did Xiaogang deposit in the bank a year?
4. Li Ming saved 2000 yuan and 1000 yuan respectively in two ways. A year later, he took them all out. After deducting interest income, he can get interest of 43.92 yuan. It is known that the interest rates of both kinds of savings are 3.24%. What is the annual interest rate of these two kinds of savings? (Prompt: Income tax on interest paid by citizens = interest amount ×20%)
Travel problems:
1.a and B are apart100km. Two people ride bicycles from A and B respectively. A's speed is 23 kilometers per hour, and B's speed is 2 1 kilometer. Riding 1 hour, B starts from B. How many hours did it take A to meet B?
Party A and Party B set out from A and B, which are 440 kilometers apart, and walked towards each other. The speed of A is 1.2 times that of B. Four hours later, they meet and ask for the speed of B. ..
3.A walks from place A at 6 am and arrives at place B at 5 pm. B start from place a by bike in the morning 10 and arrive at place b at 3 pm. When will B catch up with A?
4. It took 18 minutes for a train traveling at a constant speed to enter a 320-meter-long tunnel and 10 minutes for a fixed lamp at the top of the tunnel to shine on the train. How long is this train?
The distance between a and b is 4 16 km. A car travels from place A to place B at a speed of 32 kilometers per hour. After the car leaves 1 hour, a motorcycle travels from B to A at 1.5 times the speed of the car. How many hours before the motorcycle and the car met?
Equal product exchange:
1. Forging three cylindrical parts with a diameter of 2 cm and a height of 16 cm with a round steel with a diameter of 4 cm, how long does it take to cut the round steel?
2. Cast a 10 shot with a diameter of 12 cm with a cylindrical lead column. How long should the lead column be cut (the volume of the ball is 4π)?
Mathematical problems:
1. The sum of every two of some three numbers is 27, 28 and 29 respectively. Find these three numbers.
2. A three-digit number, the unit digit is 5. If you put 5 on the far left of this three-digit number, the three-digit number obtained is 95 times less than the original number, and the original three-digit number is found.
Engineering problems:
1. Master and apprentice process parts together, and each part can earn 1.8 yuan. After processing 10 days, it earned 576 yuan. It is known that the master can process 20 parts a day, and the number of parts required to be processed by the land every day is required.
2. To finish a project within a deadline, team A can finish it in 4 days, while team B needs 10 days. Now, after working in Team A for 2 days, Team B will finish the rest of the work on time. How many days will it take to finish as planned?
Profit problem:
1. It is understood that the sales of individual clothing stores can be profitable as long as they are 20% higher than the purchase price, but bosses often bid 50%~ 100% higher than the purchase price. If you are going to buy a dress with a price tag of 500 yuan, to what extent should you make a counter-offer?
2. A commodity will be sold at a discount because of the change of the plane. If you sell at a 15% discount on the pricing, you will lose 25 yuan; if you sell at a 10% discount on the pricing, you will earn 20 yuan. What is the price of this commodity?
I go to the store to buy exercise books every month. The shopkeeper told her that I would give her a 20% discount if I bought more. Buy 20 copies every month at the price of 1.6 yuan. Do you know what the original price is?
Lily's mother went to Parkson Shopping Center and bought her a beautiful sweater. The salesman said, "This sweater was 20% off two days ago. Today, the price is reduced by 10% on the basis of 20% discount, and only 144 yuan is needed. " Lily quickly worked out the original price of this sweater. Do you know how much it costs?
The purchase price of a commodity is 2000 yuan, and the price is 3000 yuan. The store requires a discount at the selling price, and the profit rate is not less than 5%. What's the lowest discount for salespeople to sell this product?
Interest rate problem:
1. Deposit 100 yuan into the bank on a regular basis according to 1 year. If the principal and interest (before tax) *** 10 1.98 yuan can be obtained at maturity, what percentage (in%) is the annual interest of this deposit? What percentage of the deposit is the monthly interest (expressed in%)?
2. An enterprise borrows a sum from a bank, and the agreed repayment period is 2 years, with an annual interest rate of 6% (excluding compound interest). The enterprise immediately used the money to buy a batch of goods and sold them at a price 37% higher than the purchase price. After selling for two years, the proceeds were used to repay the principal and interest of the loan, leaving 50 thousand. Q: What's the total?
3. The tax calculation method of deposit interest stipulated by the state is: interest tax = interest ×20%. The annual interest rate of one-year time deposit in the bank is 2.2%. Xiao Gang took out the principal and interest due in one year and paid the interest tax in 4.5 yuan. How much did Xiaogang deposit in the bank a year?
4. Li Ming deposited 2000 yuan and 1000 yuan in two forms respectively, and all of them were withdrawn after one year. After deducting interest income, he can get interest of 43.92 yuan. It is known that the interest rates of both kinds of savings are 3.24%. What is the annual interest rate of these two kinds of savings? (Prompt: Income tax on interest paid by citizens = interest amount ×20%)
Travel problems:
1.a and B are apart100km. Two people ride bicycles from A and B respectively. A's speed is 23 kilometers per hour, and B's speed is 2 1 kilometer. Riding 1 hour, B starts from B. How many hours did it take A to meet B?
Party A and Party B set out from A and B, which are 440 kilometers apart, and walked towards each other. The speed of A is 1.2 times that of B. Four hours later, they meet and ask for the speed of B. ..
3.A walks from place A at 6 am and arrives at place B at 5 pm. B start from place a by bike in the morning 10 and arrive at place b at 3 pm. When will B catch up with A?
4. It took 18 minutes for a train traveling at a constant speed to enter a 320-meter-long tunnel and 10 minutes for a fixed lamp at the top of the tunnel to shine on the train. How long is this train?
The distance between a and b is 4 16 km. A car travels from place A to place B at a speed of 32 kilometers per hour. After the car leaves 1 hour, a motorcycle travels from B to A at 1.5 times the speed of the car. How many hours before the motorcycle and the car met?
Equal product exchange:
1. Forging three cylindrical parts with a diameter of 2 cm and a height of 16 cm with a round steel with a diameter of 4 cm, how long does it take to cut the round steel?
2. Cast a 10 shot with a diameter of 12 cm with a cylindrical lead column. How long should the lead column be cut (the volume of the ball is 4π)?
Mathematical problems:
1. The sum of every two of some three numbers is 27, 28 and 29 respectively. Find these three numbers.
2. A three-digit number, the unit digit is 5. If you put 5 on the far left of this three-digit number, the three-digit number obtained is 95 times less than the original number, and the original three-digit number is found.
Engineering problems:
1. Master and apprentice process parts together, and each part can earn 1.8 yuan. After processing 10 days, it earned 576 yuan. It is known that the master can process 20 parts a day, and the number of parts required to be processed by the land every day is required.
2. To finish a project within a deadline, team A can finish it in 4 days, while team B needs 10 days. Now, after working in Team A for 2 days, Team B will finish the rest of the work on time. How many days will it take to finish as planned?
Profit problem:
1. It is understood that the sales of individual clothing stores can be profitable as long as they are 20% higher than the purchase price, but bosses often bid 50%~ 100% higher than the purchase price. If you are going to buy a dress with a price tag of 500 yuan, to what extent should you make a counter-offer?
2. A commodity will be sold at a discount because of the change of the plane. If you sell at a 15% discount on the pricing, you will lose 25 yuan; if you sell at a 10% discount on the pricing, you will earn 20 yuan. What is the price of this commodity?
I go to the store to buy exercise books every month. The shopkeeper told her that I would give her a 20% discount if I bought more. Buy 20 copies every month at the price of 1.6 yuan. Do you know what the original price is?
Lily's mother went to Parkson Shopping Center and bought her a beautiful sweater. The salesman said, "This sweater was 20% off two days ago. Today, the price is reduced by 10% on the basis of 20% discount, and only 144 yuan is needed. " Lily quickly worked out the original price of this sweater. Do you know how much it costs?
The purchase price of a commodity is 2000 yuan, and the price is 3000 yuan. The store requires a discount at the selling price, and the profit rate is not less than 5%. What's the lowest discount for salespeople to sell this product?
Interest rate problem:
1. Deposit 100 yuan into the bank on a regular basis according to 1 year. If the principal and interest (before tax) *** 10 1.98 yuan can be obtained at maturity, what percentage (in%) is the annual interest of this deposit? What percentage of the deposit is the monthly interest (expressed in%)?
2. An enterprise borrows a sum from a bank, and the agreed repayment period is 2 years, with an annual interest rate of 6% (excluding compound interest). The enterprise immediately used the money to buy a batch of goods and sold them at a price 37% higher than the purchase price. After selling for two years, the proceeds were used to repay the principal and interest of the loan, leaving 50 thousand. Q: What's the total?
3. The tax calculation method of deposit interest stipulated by the state is: interest tax = interest ×20%. The annual interest rate of one-year time deposit in the bank is 2.2%. Xiao Gang took out the principal and interest due in one year and paid the interest tax in 4.5 yuan. How much did Xiaogang deposit in the bank a year?
4. Li Ming deposited 2000 yuan and 1000 yuan in two forms respectively, and all of them were withdrawn after one year. After deducting interest income, he can get interest of 43.92 yuan. It is known that the interest rates of both kinds of savings are 3.24%. What is the annual interest rate of these two kinds of savings? (Prompt: Income tax on interest paid by citizens = interest amount ×20%)
The distance between a and b is 4 16 km. A car travels from place A to place B at a speed of 32 kilometers per hour. After the car leaves 1 hour, a motorcycle travels from B to A at 1.5 times the speed of the car. How many hours before the motorcycle and the car met?
Equal product exchange:
1. Forging three cylindrical parts with a diameter of 2 cm and a height of 16 cm with a round steel with a diameter of 4 cm, how long does it take to cut the round steel?
2. Cast a 10 shot with a diameter of 12 cm with a cylindrical lead column. How long should the lead column be cut (the volume of the ball is 4π)?
Mathematical problems:
1. The sum of every two of some three numbers is 27, 28 and 29 respectively. Find these three numbers.
2. A three-digit number, the unit digit is 5. If you put 5 on the far left of this three-digit number, the three-digit number obtained is 95 times less than the original number, and the original three-digit number is found.
Engineering problems:
1. Master and apprentice process parts together, and each part can earn 1.8 yuan. After processing 10 days, it earned 576 yuan. It is known that the master can process 20 parts a day, and the number of parts required to be processed by the land every day is required.
2. To finish a project within a deadline, team A can finish it in 4 days, while team B needs 10 days. Now, after working in Team A for 2 days, Team B will finish the rest of the work on time. How many days will it take to finish as planned?
Profit problem:
1. It is understood that the sales of individual clothing stores can be profitable as long as they are 20% higher than the purchase price, but bosses often bid 50%~ 100% higher than the purchase price. If you are going to buy a dress with a price tag of 500 yuan, to what extent should you make a counter-offer?
2. A commodity will be sold at a discount because of the change of the plane. If you sell at a 15% discount on the pricing, you will lose 25 yuan; if you sell at a 10% discount on the pricing, you will earn 20 yuan. What is the price of this commodity?
I go to the store to buy exercise books every month. The shopkeeper told her that I would give her a 20% discount if I bought more. Buy 20 copies every month at the price of 1.6 yuan. Do you know what the original price is?
Lily's mother went to Parkson Shopping Center and bought her a beautiful sweater. The salesman said, "This sweater was 20% off two days ago. Today, the price is reduced by 10% on the basis of 20% discount, and only 144 yuan is needed. " Lily quickly worked out the original price of this sweater. Do you know how much it costs?
The purchase price of a commodity is 2000 yuan, and the price is 3000 yuan. The store requires a discount at the selling price, and the profit rate is not less than 5%. What's the lowest discount for salespeople to sell this product?
Interest rate problem:
1. Deposit 100 yuan into the bank on a regular basis according to 1 year. If the principal and interest (before tax) *** 10 1.98 yuan can be obtained at maturity, what percentage (in%) is the annual interest of this deposit? What percentage of the deposit is the monthly interest (expressed in%)?
2. An enterprise borrows a sum from a bank, and the agreed repayment period is 2 years, with an annual interest rate of 6% (excluding compound interest). The enterprise immediately used the money to buy a batch of goods and sold them at a price 37% higher than the purchase price. After selling for two years, the proceeds were used to repay the principal and interest of the loan, leaving 50 thousand. Q: What's the total?
3. The tax calculation method of deposit interest stipulated by the state is: interest tax = interest ×20%. The annual interest rate of one-year time deposit in the bank is 2.2%. Xiao Gang took out the principal and interest due in one year and paid the interest tax in 4.5 yuan. How much did Xiaogang deposit in the bank a year?
4. Li Ming deposited 2000 yuan and 1000 yuan in two forms respectively, and all of them were withdrawn after one year. After deducting interest income, he can get interest of 43.92 yuan. It is known that the interest rates of both kinds of savings are 3.24%. What is the annual interest rate of these two kinds of savings? (Prompt: Income tax on interest paid by citizens = interest amount ×20%)