1. The processing of a batch of parts was originally planned to be completed in 15 days, but actually 30 pieces were made every day. Results It took only 10 days to complete the task. How many parts are there in this batch? 2. 14 kg of soybean is equal to 8 kg of peanut. Known 1 kg peanut ratio 1 kg soybean price 1.2 yuan. What is the unit price of soybeans and peanuts? 3. A rope is folded three times and then wound around the tree 10 cm. If it is 20 cm around the tree after 40% folding, find the circumference and rope length of the tree. 4. All the students in one class subscribed to two newspapers, 32 to math newspapers, 40 to composition newspapers and 26 to English newspapers. Q: How many people subscribe to both math newspapers and English newspapers? 1.30×10 = 300 (a) 300 ÷ (15-10) = 60 (a) 60×15 = 900 (a) Why one? Because we actually make 30 more pieces every day, and 10 makes 300 more pieces every day. Because of these 300 pieces, we will actually be five days less than the original plan, and we will just make 300 pieces in five days, so we use 300÷( 15- 10)=60 (pieces) to get the original plan date. With 60× 15=900 (pieces), it is concluded that there are 900 * *. 2.8× 1.2=9.6 (yuan) 9.6÷( 14-8)= 1.6 (. I think so, too. Since 1kg peanut is more expensive than 1kg soybean 1.2 yuan, then 8kg peanut should be more expensive than 8kg soybean by 9.6 yuan. Now their prices are equal, that is to say, all of 9.6 yuan is included, and the remaining 6 Jin of soybeans are not equal. So use 9.6÷( 14-8)= 1.6 (yuan) to get the unit price of soybean. Then use 1.6 1.2=2.8 (yuan) to get the unit price of peanuts. 3. (1020) ÷ (1/3-1/4) = 360× (m) rope length. I think the circumference of a tree can be found by using profit and loss problem's formula. 4.(32 40 26)÷2=49 (person) 49-40=9 (person) I think so. Because everyone subscribes to two newspapers, everyone has to be counted twice, so (32 40 26) ÷ 2 =. If he subscribes to these two newspapers, he can't subscribe to the composition newspaper, so he uses 49-40=9 (person)

5. Someone walks 4.8 hours kilometers per hour. It takes 8.5 minutes less to ride a bike per kilometer than to walk. What's the speed of cycling? 6. Of the two engineering teams, Team A has twice as many people as Team B. After Team A transferred 9 people and Team B transferred 18 people, Team A gave up. How many people are there in Team A? 7. The east warehouse stores 1500 tons of grain, and the west warehouse stores 1200 tons of grain. If 60 tons of grain are transported from Dongcang to Xicang every day, how many days later will the grain stored in Xicang be twice as much as that in Dongcang?

The answer to the five questions is 3.2 times.

It can be considered that the walking speed is 4.8 kilometers per hour. Then it takes 8.5*4.8=40.8 minutes to ride 4.8 kilometers by bike than to walk 4.8 kilometers. Then it takes 1 hour minus 40.8 minutes to ride 4.8 kilometers, 19.2 minutes to walk 4.8 kilometers 19.2 minutes /60 minutes. The former divided by the latter is 3.2 times the answer.

The answer to question 6 is 24 people.

Using only the equation, team A starts with X people, then team B is X/2 people. Then Team A changed 9 people to X-9 people, and Team B changed 18 people to X/2 18 people. Later, Team B was twice as big as Team A and got the equation.

2(X-9)=X/2 18，X=24。

The answer to question 7 is 10 days.

It can be considered that the grain from west to east is twice as much, so the total grain 1200 1500=2700 tons is regarded as three, and the west accounts for two, that is, 2700*2/3= 1800 tons, and the grain in the western warehouse is1800-/kloc.

8. Wang Ying, Zhao Ming and Li Gang made an appointment to participate in one of the four sports events of the school sports meeting: long jump, high jump, 100 meter run and 200m run. Q: How many different situations will occur after registration?

Analysis of three people signing up for the competition does not affect their independent registration. So it can be seen as a three-step process, that is, one person signs up. First of all, Wang Ying can sign up for one of the four events. There are four different ways to sign up. Secondly, there are four different ways to register in Zhao Ming. Similarly, Li Gang has four different ways of registration. It can be solved by multiplication principle.

You can't find the answer to the following questions, but you can do it yourself:

1. The fruit shop sent five baskets of apples and five baskets of pears. A * * * weighs 225 kilograms, and it is known that each basket of apples is 5 kilograms heavier than each basket of pears. How much does each basket of apples and pears weigh?

2. There are 82 workers in the two engineering teams A and B. If 8 workers are transferred from Team B to Team A, the numbers of the two teams are exactly equal. How many people are there in Team A and Team B?

Children make 27 red, yellow and white flowers, of which yellow flower is twice as big as white flower and red flower is three times as big as yellow flower. How many are there in each of the three flowers?

There are 83 male and female workers in a workshop, of which the number of male workers is more than three times that of female workers. How many men and women are there?

It is known that the father is 30 years older than his son, and this year's age is exactly seven times that of his son. How old are father and son this year?

6. The oil in barrel A is four times that in barrel B. If 18kg is taken from barrel A and poured into barrel B, the weight of the two barrels of oil is equal. How many kilograms are there in two barrels of oil?

7. Add 7 to my local chicken, multiply 7, subtract 7 and divide 7, and the result is 7. Please calculate, how many chickens are there in my family?

8. The original Chinese fir poles on a certain line are 7 1 root, and the pole spacing is 25m. Now, all the Chinese fir poles in the original line have been replaced by cement poles. How many meters is the interval between rods at this time?

9. There is a bus road in a city, with a length of16500m from the starting point to the end point, with an average stop of 500m. How many stops should there be in the middle of this road?

10. Give a pack of fruit candy to a group of children, 5 in each pack, and the rest 16. If each has 7, the difference is 12. How many children are there in this group? How many pieces of fruit candy are there in this bag?

1 1. Grandpa is 60 years old and grandson is 12 years old this year. A few years later, my grandfather was three times as old as my grandson.

12. A ship, traveling at a speed of 14 kilometers per hour in calm lake water, is now entering this river flowing at a speed of 2 kilometers per hour. How many kilometers did the ship travel in five hours? What will happen if you drive along the river for five hours?

13. There are chickens and rabbits in the same cage today, 35 above and 94 below. How many chickens and rabbits are there?

14. Squirrels pick pine nuts, 40 a day in sunny days and 25 a day in rainy days. It has been collected for several days, and * * * has collected 280 pieces, with an average of 28 pieces per day. How many sunny days are there these days?