There are a and B piles of mud. In the past, the mass of cement in pile a was 7:5 of that in pile B. now, 12 tons of cement is transported from pile B to pile a At this time, the mass of pile a's water hammer is 7.8 moles. How many tons of cement are there in pile a and pile B

There are a and B piles of mud. In the past, the mass of cement in pile a was 7:5 of that in pile B. now, 12 tons of cement is transported from pile B to pile a At this time, the mass of pile a's water hammer is 7.8 moles. How many tons of cement are there in pile a and pile B

There are two piles of mud, a and B. the original mass of cement in pile a is 7:5 of pile B. now 12 tons of cement are transported from pile B to pile A. at this time, the mass of cement in pile a is 7:8 of pile B. how many tons of cement are there in pile a and pile B? Originally, the mass of cement in pile a is 5 / 7 (1 + 5 / 7) = 5 / 12, and then the mass of cement in pile a is 8 / 7 (1 + 8 /)