Question 95

Average age of a father and his son is 22 years. Ratio of their age is 10 : 1,
what is the age of the son?

Solution

Let's consider age of father as x and age of son as y.

Average of their ages $$ = \frac{x+y}{2}=22 $$

=> x+y=44 => x=44-y

Given that x:y=10:1 => 44-y:y=10:1

=> 44-y=10y

=> 11y=44 =>y=4

Therefore, age of son is 4years.

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