Question

Average age of three boys is 22 years. If the ratio of their ages is 6 : 9 : 7, then the age of the youngest boy is

• A. 8 years
• B. 9 years
• C. 18 years
• D. 16 years

Answer 1

Answer:

C. 18 years

Average age of three boys = 22 Total Age of three boys = 66 years Let the ages of three boys is 6a, 9a and 7a respectively. 6a + 9a + 7a = 66 22a = 66 a = 3 Age of youngest boy = 3 × 6 = 18 years