The average age of a committee of 10 members is 42 years. A member of age 53 retires and a new member of age 45 years takes his place. What is the average age of the new committee?
A39.5 years
B41.2 years ✓ Correct
C38.2 years
D40.7 years
Correct answer: (B) 41.2 years
Explanation
The new average is 41.2 years.
Old total = 10 x 42 = 420.
Replace 53 with 45: 420 - 53 + 45 = 412.
New average = 412 / 10.
= 41.2 years.
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