sally and susan had an equal amount of oney each. after sally spent $15 and susan spent $24, the ratio of sally's money to susan's money was 4:3. how much money did each girl have at first?

1 answer

let the starting amounts be x and y

x = y
(x-15)/(y-24) = 4/3

x=y=51

check

(51-15)/(51-24) = 36/27 = 4/3