1.

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 is1). 8 years2). 9 years3). 18 years4). 16 years

Answer»

Given,

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.

Then,

⇒ 6a + 9a + 7a = 66

⇒ 22a = 66

⇒ a = 3

∴ Age of YOUNGEST boy = 3 × 6 = 18 years.


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