If 25 dimes were moved from Box A to Box B, there would be an equal number of dimes in both boxes. If 100 dimes were moved from Box B to Box A, the ratio of dimes in Box A to Box B would be 7 : 2. What was the original number of dimes in Box A?

Answer 1

If we started with a in A and b in B, then we are told:

a-25 = b+25
(a+100)/(b-100) = 7/2

a = 250