The sum of the ages of the son and father is 120 years. The father age is 3 times than the son. What is the age of father?

A 75

B 80

C 90

D 85

Solution

Correct Answer: Option C

মনে করি ,
পুত্রের বয়স =x বছর
 পিতার বয়স =3x বছর

প্রশ্নমতে,
x + x = 120
4x = 120
x = 30
.: পিতার বয়স = 3 x 30 = 90 বছর।

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