2. A factory 120 people, and B factory 80 people. How many people are transferred from Factory B to Factory A, so that the ratio of the two factories can reach 5∶3?
3. The cost of a commodity this year is higher than last year110, but the original selling price is still maintained, so the profit of each commodity is reduced by 2/5. What is the cost of this commodity this year?
Students in Grade 5 and 6 went to plant trees. Students in grade five planted 2/3 of those in grade six, and 24 trees in grade six accounted for less than 3/4 of the total. How many trees were planted in the fifth grade?
5. Team A and Team B need to build roads. Team A needs 12 days, and Team B needs 10 days ... Now Team A will repair roads for a few days, and the rest will be repaired by Team B alone. As a result, when it was completed, A worked more than B 1 day, and how many days did B repair it?
6. It takes 65,438+02 days for two teams to complete a project. Now Team A is working alone for 65,438+08 days, and Party B will do the rest, and it will be completed in 8 days. How many days will it take if Party A does this project alone?
7. A pool is equipped with three water pipes, the first one is the water inlet pipe; The second pipe is an outlet pipe, which can fill a pool of water in 20 minutes; The third pipe is also an outlet pipe, which can drain the water in the pool within 30 minutes. Now, open the first pipe first, and wait until the water in the pool just overflows, then open the second and third pipes. It took 18 minutes to drain the water in the pool. In this case, how many minutes does it take to drain the pool after opening tube A and then opening tube B instead of tube C?
8. If the teams of Party A and Party B work together, a project can be completed within 10 days. If Team A works for 4 days and Team B works for 6 days, 7/ 15 of this project will be completed. How many days does Group A need to do this project alone?
9. A batch of books were distributed to students A, B and C. A got a total of 1/5 and 5 books, B got a total of 1/4 and 7 books, and C got the remaining books of 1/2, which just accounted for 1/8 of the total books. How many books are there in this batch?
10. build a road, and the number of meters repaired is 3/2 of the number of meters not repaired. If we build another 30 meters, the ratio of the number of meters repaired to the number of meters not repaired will be 7: 3. How long is this road?
I have many such questions, all of which are winter vacation homework crying.
I hope it can be adopted!