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Earlier discussion
1 older comment kept for context.
Olayiwola Akinkunmi
Let son's age = x
Let man's age = 4x
Since the difference of their ages is 36;
: 4x - x = 36
3x = 36
x = 36/3
x = 12
Therefore the sum of their ages = 4x + x
=4(12) + 12
= 48 + 12
= 60