1, five cars can be transported in four times 100 tons of steel. If the same 7 cars transport 105 tons of steel, how many times do you need to transport it?

A batch of vegetables was sent to the canteen. It was originally planned to eat 50 Jin a day and slowly consume the vegetables in 30 days. Later, according to everyone's opinion, I ate 10 kg more than planned every day. How many days can we eat these vegetables?

3. Party A, Party B and Party C have three packages of chemical fertilizers, with two packages of chemical fertilizers weighing 32kg, two packages of chemical fertilizers weighing 30kg and two packages of chemical fertilizers weighing 22kg. How many kilograms do you want for each of these three bags of fertilizer?

4. Car A and car B originally contained 97 baskets of apples, and took 14 baskets from car A and put them on car B. As a result, car A had 3 more baskets than car B. How many baskets did each car originally contain?

There are 248 apricot and peach trees in the orchard. There are three times as many peach trees as apricot trees. How many apricot and peach trees are there?

6. There are 52 cars in Station A and 32 cars in bilibili. If there are 28 cars from Station A to bilibili and 24 cars from bilibili to Station A every day, then the number of cars in bilibili will be twice that of Station A in a few days? .

7. The sum of the numbers A, B and C is 170, where Party B is 2 times less than Party A, 4 times less than Party A and 3 times more than Party A, 6. What are these three numbers? My father is 27 years older than my son. This year, the father is four times older than his son. How old are the father and son this year?

9. After the reform of management mode, the profit this month is 6.5438+200,000 yuan more than that of the previous month, which shows that the profit this month is 300,000 yuan more than that of the previous month. What's the profit in these two months?

10. The grain depot has 94 tons of wheat and 0/38 tons of corn. If 9 tons of wheat and 9 tons of corn are shipped out every day, how many days later will the remaining corn be three times that of wheat?

1 1, 100 kg of rapeseed can extract 40 kg of oil. Now there are 3700 kilograms of rapeseed. How much oil can be squeezed out? 12. This year's Arbor Day, 300 teachers and students in a primary school planted 400 trees. According to this calculation, how many trees have been planted by 48,000 teachers and students in the county?

13. The waterway from Nanjing to Shanghai is 392 kilometers long. At the same time, each port has a ship sailing in the opposite direction. Ships from Nanjing run 28 kilometers per hour, while ships from Shanghai run 2 1 kilometer per hour. How many hours passed before the two ships met? 14, Xiao Li and Xiao Liu are running on a 400-meter-long circular track. Xiao Li runs 5 meters per second and Xiao Liu runs 3 meters per second. They started from the same place at the same time and ran in the opposite direction. So, how long will it take them to meet for the second time?

15. A good horse walks 120km every day, and a bad horse walks 75km every day. Bad horses go first 12 days. How many days can a good horse catch up with a bad horse? Xiaoming and Xiao Liang are running on the 200-meter circular track. Xiao Ming ran for 40 seconds. They started from the same place and ran in the same direction at the same time. Xiaoming ran 500 meters when he first caught up with Liang Xiao. What is the speed of Xiao Liang per second? 17, our PLA pursued the fleeing enemy. At 16 pm, the enemy began to flee from A at the speed of 10 km per hour. At 22 o'clock in the evening, the PLA was ordered to pursue from B at a speed of 30 kilometers per hour. As we all know, the distance between A and B is 60 kilometers. How many hours can the PLA catch up with the enemy?

18, the bus from Station A to bilibili, with a speed of 48 kilometers per hour; A truck was traveling from bilibili to Station A at the same time, with a speed of 40 kilometers per hour. Two trucks meet at the midpoint of two stations 16 km, and find the distance between the two stations.

19, brother and sister go to school from home at the same time. My brother walks 90 meters per minute and my sister walks 60 meters per minute. When my brother arrived at the school gate, he found that he had forgotten his textbook. He immediately went home to get it along the original road and met his sister at 0/80 meters away from the school/kloc-. How far is their home from school?

20. A river bank 136 meters, plant a weeping willow every 2 meters, with both ends. How many weeping willows can a * * * plant? 2 1. A circular pond is 400 meters in circumference, and poplar trees are planted every 4 meters along the shore. How many poplars can a * * * plant?

22. A square sports ground, each side is 220 meters long, and a lighting lamp is installed every 8 meters. A * * *, how many lights can you hold?

23. Floor tile a house with an area of 96 square meters. The length and width of the floor tiles used are 60 cm and 40 cm respectively. How many tiles do you need at least?

A bridge is 500 meters long, and street lamps are installed on poles on both sides of the bridge. If there is a telephone pole every 50 meters and two street lamps are installed on each pole, how many street lamps can be installed in a * * *?

25. Dad is 35 years old and Liang Liang is 5 years old. How old is Liang Liang this year? What about next year?

26. My mother is 37 years old and my daughter is 7 years old. In a few years, my mother will be four times as old as my daughter.

27.3 years ago, the father and son were 49 years old. This year, the father is four times as old as his son. How old are father and son this year? 28. It takes eight hours for a ship to sail 320 kilometers along the river, and the current speed is 15 kilometers per hour. How many hours does it take for the ship to sail against the current?

29. It takes 18 hours for the ship to travel 360 kilometers upstream, and 10 hours for it to return to its original place; It takes 15 hours for ship b to travel the same distance against the current. How long will it take to get back to the original place?

30. An airplane flies between two cities. The speed of the plane is 576 kilometers per hour and the wind speed is 24 kilometers. It takes three hours for the plane to arrive against the wind and several hours to fly back with the wind.

45. Sun Liang read the book 100,000 Why, 24 pages a day, 15 days. If he reads 36 pages a day, how many days can he finish it?

46. Make a triangle with 60 cm long iron wire, and the ratio of three sides of the triangle is 3: 4: 5. How long are the three sides?

47. Once upon a time, there was a herder who left a last note saying that he would give 17 sheep to his three sons, the eldest son 1/2, the second son 1/3 and the third son 1/9. He also stipulated that it was forbidden to slaughter sheep, and asked his three sons how many sheep to give.

48. The proportion of people in the first, second and third workshops of a factory is 8: 12: 2 1. The number of people in the first workshop is 80 less than that in the second workshop. How many people are there in three workshops?

The number is 80. More than one person?

The corresponding number of copies is12-88+12+21

49. There are 420 male employees and 525 female employees in Hongqi Chemical Plant. What is the ratio of male employees to female employees? 50. There are 420 male employees and 525 female employees in Hongqi Chemical Plant. What percentage of employees are male and female respectively?

5 1. A meadow, 10 cows can eat the grass in 20 days, 15 cows 10 days. How many cows can eat grass in five days?

Spinach 52.2 mu should be applied 1 kg, Chinese cabbage 5 mu 3 kg, and two kinds of vegetables 16 mu 9 kg. How many acres of cabbage are there?

53. Miss Li bought 45 exercise books and diaries for the school with 69 yuan money. Each exercise book 3 .20 yuan, 0.70 yuan per diary. How many exercise books and diaries did you buy?

54. Chickens and rabbits in the same cage (Question 2) There are 100 chickens and rabbits, and chickens have 80 more feet than rabbits. How many chickens and rabbits are there? 55. There are 100 steamed buns for 100 monks, one big monk eats three steamed buns, and three little monks eat 1 steamed buns. How many monks are there?

56. There are three layers of hollow phalanx, and the outermost layer has 10 people. Find the number of people in the whole square.

A pile of chess pieces, arranged in a square, with four extra pieces. If you add a layer in the vertical and horizontal directions of the square, you will lose nine pieces. How many pieces?

58. There is a triangular forest with 65,438+0 trees at its apex. There are 65,438+0 more trees in each row below than in the previous row, and there are 5 trees in the bottom row. How many trees are there in this forest?

59. The average price of a commodity increased by 10% in January and decreased by 10% in February. What is the price change of this commodity from the original price to February?

60. As a result of the relocation of a clothing store, the goods in the store were sold at a 20% discount. Xin Wei bought a dress with 52 yuan. It is known that the original price of this dress is 30% on schedule. So is this store losing money or making a profit? What is the loss (profit) rate?

6 1. Li Daqiang deposited 1200 yuan in the bank with a monthly interest rate of 0.8%. Take out 1488 with interest after maturity, and ask how long the deposit period is.

62. The annual interest rates of fixed deposit and withdrawal in banks are: 7.92% for two years, 8.28% for three years and 9% for five years. Both Party A and Party B deposit RMB 654.38+00,000 at the same time. Party A will deposit it for two years first, and then deposit it with interest for three years after the expiration; B for five years. Five years later, they were taken out at the same time. So, who has more income? How much more?

63. Grandpa has 50g 16% sugar water. How many grams of water does it take to dilute (1) into 10% sugar water? (2) How many grams of sugar do you need to add to make it 30% sugar water?

64. How many grams of 30% sugar water and 15% sugar water do you need to make 600 grams of 25% sugar water?

65. Ten small trees should be planted in five rows, with four trees in each row. Please do something. 66. Nine small trees should be planted in ten rows with three trees in each row. Please do something.

67. Fill the nine numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 in nine squares, so that the sum of the three numbers in each row, column and diagonal is equal.

68. Fill the nine numbers 2, 3, 4, 5, 6, 7, 8, 9 and 10 into nine squares, so that the sum of the numbers in each row, column and diagonal is equal.

69. Yucai Primary School has 367 students, born in 1999. How many of them have birthdays on the same day? 70. It is said that people have no more than 200,000 hairs. If there are 36.45 million people in Shaanxi Province, according to these data, do you know how many people in Shaanxi Province have at least the same amount of hair? .

7 1. A piece of cardboard is 60 cm long and 56 cm wide. Now it needs to be cut into several largest squares of the same size, and no surplus is allowed. What is the side length of a square?

72. Three cars, A, B and C, are driving in the same direction on the roundabout. Car shop A takes 36 minutes a week, car shop B takes 30 minutes and car shop C takes 48 minutes. Three cars start from the same starting point at the same time. How long will it take for these three cars to meet at the same time?

73. Bake a cake on the stove. Bake both sides of the cake. Bake for 3 minutes on each side. Only two cakes can be put on the stove at the same time. Now, how many minutes does it take to bake three cakes?

74. There are 90 people in Class A and Class B. Class A has 30 fewer people than Class B. How many people are there in each class? 75. There are 35 chickens and rabbits with 94 feet. How many rabbits are there? How many chickens? (Equation solving)