The sum of the ages of the son and father is 120 years, the father's age is 3 times that of the son. What is the age of the father?

The sum of the ages of the son and father is 120 years, the father's age is 3 times that of the son. What is the age of the father? Correct Answer 90

F + S = 120 ………(i)F = 3 SFrom equation (i)3 S + S = 120S = 30F = 3 x 30 = 90 years
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