2. For a batch of parts, 1/4 of the total number was handled on the first day, which was 25% more than that on the first day, and 400 parts were missing in two days, accounting for 62.5% of the total number. How many parts are there in this batch? (Can't use equations)
There are 56 students in one class, seven thirds of whom are girls. In the new semester, I transferred several girls. At this time, girls account for the whole class 1/2. How many girls transfer?
A factory has three workshops. The number of people in one workshop accounts for 1/4 of the total number of people, the number of people in the second workshop is 7/8 of that in the third workshop, and the number of people in the first workshop is less than that in the third workshop 12. How many people are there in the first workshop What about the second workshop? What about the third one?
5. Cut a rectangle with a length of 10 cm and a width of 8 cm into the largest circle. How many square centimeters should I cut off?
6. From A to B, I walked 3/8 on the first day and the remaining 40% on the second day. The remaining distance is 6500 meters more than the second day of junior high school. How many kilometers is it? (Can't use equations)
7. To build a road, 20% of the total length was built on the first day, 5/8 was left on the second day, 40% was left over 30 meters on the third day, and finally 60 meters was left. How long is this road?
8。 On February 24th, 2006, Du Bao deposited RMB 3 100 in the bank for five years. If the annual interest rate is 5%, how much more can he get by 20 1 1 year +02-24?
9. It takes 8 hours for the express train to go from city A to city B, and 12 hours for the local train to go from city B to city A. Two trains leave from two cities at the same time. When they met, the local train was 360 kilometers away from B. How many kilometers away were the two cities?
10 .. it takes 8 hours for the express train to go from city a to city b, and 12 hours for the local train to go from city b to city a. Two trains leave from two cities at the same time. When they met, the express train traveled more than the local train 180 km. How many kilometers is it between a and b cities?
1 1. A factory has two workshops, A and B. If workshop A 150 people are transferred to workshop B, the number of people in the two workshops is equal. If workshop B 100 people are transferred to workshop B, and the number of people in workshop B is 1/3 of that in workshop A, how many people are there in each workshop?
12. TV inspection showed that the defective product was 1/9. Later, it was found that 1 was not genuine. At this time, the defective products are 3/22 of the genuine products. How many TV sets are there in this batch?
13. The difference between male workers 1 4 and female workers13 in a factory is1. How many men and women workers are there in this factory?
14. Someone gave Mr. and Mrs. Kim 170 yuan, and 2/9 of Mr. Kim is equal to14 of Mrs. Kim. How much did they each give?
15. There is a circular swimming pool. One day, people will clean the pool and open two water pipes. The water inlet radius is 10 cm, the water outlet radius is 5 cm, and the water inflow or water outflow per square centimeter is 10 cm. The circumference of the swimming pool is 128 cm, and each square centimeter can accommodate 10 cm. How much water can this swimming pool hold?
16. There is a pile of sweets, 9/20 of which are butterscotch. If you put 16 pieces of fruit candy, milk candy only accounts for 1/4. How many pieces are there in this pile of sweets?
17. Xiaoxiao is reading a book. She has read the unread 1/8. After reading 9 pages, she has read the unread 1/7. How many pages are there in this book?
18.TT There were 750 students in primary school last semester. This semester, boys increased by 1/6, while girls decreased by 1/5. * * There are 7 10 students. How many boys and girls are there this semester?
19. There are stones in the Cage quarry. The first shipment 1/2, the second shipment 1/3 and the third shipment 1/4. According to this calculation, after 500 times of transportation, there is still 1 ton of stone. How many tons were these stones originally?
20. A project takes 8 days, 65,438+02 days and 20 days to complete. How many days does it take for tripartite cooperation?
2 1. It takes 30 days for Party A and Party B to jointly process a batch of parts. Now Party A does it for 22 days, then Party B does it for 18 days, leaving 2/5 unfinished. It is known that Party A makes 9 more parts than Party B every day. How many parts are there in this batch?
22. A pool is equipped with a water inlet pipe and three identical water outlet pipes. A single water inlet pipe can fill the empty pool for 20 minutes, and a single water outlet pipe can drain the pool for 45 minutes. Now there are two-thirds of the water in the pool, and four water pipes are opened at the same time. How many minutes later, two-fifths of the water is left in the pool?
23. A pool is equipped with two water inlet pipes, A and B. At the same time, the water intake of the second pipe is 1.6 times that of the first pipe. In order to fill the empty pool, pour 1/5 of water from A, then turn off A and turn on B, which will fill the remaining water. * * * It takes 1/5 hours, 1/4 minutes. A How long has it been going on? What about b?
24. Add 30 liters of water to an alcohol solution with a concentration of 20%, and the concentration becomes 15%. How much water will become 25%?
25. Three people, Party A, Party B and Party C, worked together to complete a job and got a reward of 5,400 yuan. Party B cooperates for 8 days to complete 1/3 of the whole project, then Party B and Party C cooperate for 2 days to complete the remaining 25%, and finally three people cooperate for 5 days to complete the whole project. How much should Party A, Party B and Party C get in return for their work today?
26. Car A leaves from location A and car B relatively at the same time. A car travels 60 kilometers per hour, and B car travels 65,438+00% of the whole journey per hour. When car B travels 65,438+03/24, car A travels 5/8. How many kilometers are there between these two places?
27. Xiaotian walked 50 meters, taking 79 steps for the first time, 8 1 step for the second time and 80 steps for the third time. What is the average distance he takes every step?
28. Zhang Wolf is about 70 cm long. He walked about 1000 steps around the playground. How long is the side of the playground?