Question

The amount of money Tom has is 75% of Sally's amount of money after Sally spent $120 and Tom saved all of his money Tom's amount is 50% more than Sally's. how much money did each of them have at the beginning?

Answer 1

Tom's amount --- t
Sally's amount --- s

t = .75s --> t = (3/4)s

Sally spends 120 , so she has s - 120
and now:
t = 1.5( s - 120)
t = 1.5s - 180

Then: (3/4)s = 1.5s - 180
3s = 6s - 720
-3s = -720

carry on ....