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A man said to this son, “I was one-third of your present age when you were born”. If the present age of the man is 48 years, then the present age of the son is

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36 years

25.7 years

29.3 years

28 years

answer is D.

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Detailed Solution

Present age of the son be $x$

He was born $x$ years ago.

The age of the man was $: 48 - x$

His age when the son was born should be equal to $\frac{1}{3} of x$

$\begin{array}{l} 48 - x = \frac{1}{3} (x) \\ 144 - 3 x = x \\ 4 x = 144 \\ x = 36 \end{array}$

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