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Arithmetic Aptitude :: Problems on Ages

6. The present ages of three persons are in the ratio of 3:4:6.Four years ago the sum of their age was 66.Find their present age

Answer: Option A

Explanation :

Lets Present age of three person will be 3x, 4x and 6x respectively.

Four years ago their age will be
(3x-4), (4x-4) and (6x-4)

As per the question
(3x-4) + (4x-4) + (6x-4) = 66
=> 13x-12 = 66
=> 13x = 78 => x = 6

So their present age 18, 24 and 36.

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