At present , father's age is 4 times more than that of his son . 6 years ago father's age was 10 times more than of his son. What is their present age?

At present , father's age is 4 times more than that of his son . 6 years ago father's age was 10 times more than of his son. What is their present age? Correct Answer 36 and 9 years

Let, Father’s age be F and son’s age be S F = 4S and, (F - 6) = 10(S - 6)  4S - 6 = 10S - 60  6S = 54 S = 9,F = 36
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