Let that number of years be x
Ethan --- 40+x
son ------ 12+x
40+x = 5(12+x)
40+x = 60 + 5x
-4x = 20
x = -5
it happened 5 years ago
check: 5 yrs ago, Ethan was 35, son was 7
and 35 is 5 times 7
Ethan is 40 years old his son is 12 years old. How many years was Ethan 5 times older then his son
1 answer
1 answer