Age practice problem

Question

Jesse is 83 years old. Rosa is 32 years old. How many years ago was Jesse's age 4 times Rosa's age?

Answer 1

83-x = 4(32-x)

83-x = 128-4x

3x = 128-83 = 45

x = 15 years ago Jesse was 4 times Rosa's age

83-15 = 4(32-15)

68 = 4(17)

15 years ago Jesse was 68 which is 4 times Rosa's age then of 17