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2 years ago

10

Ethan is 40 years old. His son is 12 years old.

2 answers:

larisa [96]2 years ago

4 0

20 years in the future......

kykrilka [37]2 years ago

3 0

40-x / 12-x = 5
40-x = 5 * (12-x)
40-x = 60 - 5*x
5*x-x = 60 - 40
4*x=20
x=5

It was 5 years ago. Ethan was 35 and son was 7.

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