I don't know what "8(3) of the total transportation quantity of Party A" means.
4. The grain storage ratio of warehouse A and warehouse B is 7: 6. After taking out 36 tons from warehouse A and putting them into warehouse B, the grain storage ratio of warehouse A and warehouse B is 2: 3. How many tons was originally stored in Warehouse A?
36÷[7/(7+6)-2/(2+3)]
5. Three workshops in a factory process a batch of parts, the proportion of parts processed in the first workshop is 3( 1), and the proportion of parts processed in the second workshop and the third workshop is 5: 7. It is known that the third workshop processes 70 parts. How many parts are there in this batch?
6. There are 72 school choirs, including 5 (7) boys and 5(7) girls. Later, several boys were recruited. At this time, the ratio of boys to girls is 3: 2. How many boys did the school recruit?
7. There are 300 tons of rice in granaries A and B. If 60% of the rice is transported from warehouse A to warehouse B, the tonnage of rice in warehouse B is twice that of the remaining rice in warehouse A. How many tons of rice are there in warehouses A and B?
Answer: 300(2+ 1)÷( 1-60%)
B: 300- A。
8. The number of male employees in a factory exceeds 60% of the total number of employees in the factory, and the number of female employees is 4( 1). How many employees are there in this factory?
9. The convoy delivered 20% of the total wheat on the first day and 48 tons on the second day. At this time, the wheat in the warehouse is 87.5% of the original. How many tons of wheat are there in the warehouse?
48÷[87.5%-( 1-20%)]
10, two barrels of water A and B weigh 90kg. When 25% of water in A is put into B, the weight ratio of water in A to water in B is 1:2. How many kilograms are A and B respectively?
This is the same as Question 7.
Answer: 90 degrees (1+2) degrees (1-25%).
B: 90-a.
1 1, two piles of lime * * * weight 1744 kg. If the first pile uses 75% and the second pile uses 504 kg, then the remaining weight of the two piles of lime is equal. How many kilograms are there in two piles of lime?
The first pile: (1744-504)÷(2-75%)
The second pile: 1744- the first pile
12. There are 630 kinds of original science and technology books and literature books in the school, of which science and technology books account for 20%. Later, I bought some science books. At this time, the ratio of science and technology books to literature and art books is 3:7. How many science and technology books did you buy?
630×( 1-20%)×3/7-630×20%
13. The canteen used up a barrel of oil in three days. On the first day, it used 6 kilograms. The next day, it used the remaining 3( 1). On the third day, it just used up half of this barrel of oil. How many kilograms is this barrel of oil?
14. There are four fifth-grade students who take part in the cleaning (1), and then two people take the initiative to take part. The ratio of actual participants to non-participants is 1:3. How many people are there in the class?
15, an expressway. First, repair168km, then repair the remaining 4( 1). At this time, there are still 42km left. How many kilometers is this expressway?