The average age of three boys 16 years. It their ages are in the ratio 4:5:7, find the age of the youngest boy.

The average age of three boys 16 years. It their ages are in the ratio 4:5:7, find the age of the youngest boy.

A 12

B 17

C 14

D 15

Solution

Correct Answer: Option A

মোট বয়স= ১৬ * ৩= ৪৮
ছোট জনের বয়স= ৪৮*৪/১৬= ১২