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#1 Re: Help Me ! » A man said "I am only four times my son's age » 2021-03-17 16:42:43

happy snow

the son's age is: (120+10) ÷ (1+4+8) = 10
the father is 10 × 4 =40
the grandpa is 2×40 -10 =70

check: 10+40+70=120

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