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  1. The respective ages of father and his son are 41 and 16 years. In how many years will the father be twice as old as his son ?
    1. 19 years
    2. 9 years
    3. 10 years
    4. 15 years
Correct Option: B

Suppose x years later the father will be twice as old as his son.
∵ x + 41 = 2 (x + 16)
⇒ x = 41 - 32 = 9 years


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