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The sum of the present ages of a father and his son is 60 years. Six years ago, father’s age was five times the age of the son. After 6 years, son’s age will be:

A. 12 years B. 14 years C. 18 years D. 20 years Answer: Option D
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Solution(By Apex Team)

Let the present ages of son and father be x and (60 -x) years respectively. Then, (60 – x) – 6 = 5(x – 6) ⇒ 54 – x = 5x – 30 ⇒ 6x = 84 ⇒ x = 14 ∴ Son’s age after 6 years = (x + 6) = 20 years.