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  1. A father's age is four times as much as the sum of the ages of his three children but 6 years hence his age will be only double the sum of their ages. Then the age of the father is ?
    1. 30 years
    2. 40 years
    3. 60 years
    4. 45 years
Correct Option: C

Let father's age be x years and the sum of ages of children be y years.
∵ x = 4 y ....(i)
Also (x + 6) = 2(y + 6 + 6 + 6) ....(ii) [6 is added thrice for three children ]

Solving (i) and (ii)
x = 60 years, and y = 15 years.



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