The mass ratio of cement in pile a and pile B is 5:3. If 7.8 tons of cement are transported from pile a to pile B, the mass ratio of cement in pile a and pile B is equal. How many tons of cement are there in pile a and pile B?

The mass ratio of cement in pile a and pile B is 5:3. If 7.8 tons of cement are transported from pile a to pile B, the mass ratio of cement in pile a and pile B is equal. How many tons of cement are there in pile a and pile B?

The mass ratio of cement in pile a and pile B is 5:3. If 7.8 tons of cement is transported from pile a to pile B, the mass ratio of cement in pile a and pile B is equal. How many tons of cement are there in pile a and pile B? The total is 7.8 △ 5 / (5 + 3) - 1 / 2 = 7.8 △ 5-1 / 2 = 7.8 △ 1 / 8 = 62.4 tons, and the original is 62.4 × 5 / (5 + 3) = 62.4 × 5 / 8 = 39 tons