Help me answer this

Question

Joyce had $75 and Leslie had $48. After each spent the same amount of money, the ratio of the amount of money Joyce had to the amount of money Leslie had was 7 : 4. How much did each of them have left

Answer 1

Joyce/Leslie = 7/4 = 1.75 = (75-x)/(48-x)

both spend the same amount = x dollars

cross multiply

300-4x =336 -7x

3x =36

x.. = $12 spent

leaving Joyce with $63

and Leslie with $36

63/36 = 21/12 =7/4= 7:4 ratio