$15$ years hence a man will be just $4$ times as old as he was $15$ years ago. His present age is :

10

years

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15

years

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20

years

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25

years

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Solution

The correct option is D $25$ years
Let the present age of the man be $x$ years
$∴ (x + 15) = 4 (x - 15)$
$∴ 3 x = 75$
$∴ x = 25$

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Six years hence, Rahul's age will be three times his son's age and three years ago, he was nine times as old as his son. Rahul's present age is:

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