a man is three times as old as his son. ten years ago the man was 8 times as old as his son .now his age is equal to the square of his sons age
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Step-by-step explanation:
Let man age be x
Son age be y
A man is 3times old as his son
x=3y
Ten years ago
x-10=8(y-10)
3y-10=8y-80
80-10=8y-3y
70=5y
y=14
Man age 42
Son age 14
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