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Andrew [12]
3 years ago
10

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

Mathematics
2 answers:
larisa [96]3 years ago
4 0
20 years in the future......
kykrilka [37]3 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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