Question

In a committee there are 15 members. If two members whose ages are 45 years and 55 years are replaced by the two new members, then average age of 15 members is increased by 2 years. What is the average age (in years) of the new members?

A) 59 B) 61 C) 65 D) 68

Answer 1

Answer:

c

Step-by-step explanation:

The replaced two member's average age is 50.

hence, to increase 2 years of average age for 15 members the new two member's average age have to be (50+15)x2 years.

so it's 65.