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The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member? Correct Answer 40 years

Hints: Let, 4 years ago 9 person total age = x Now, Increase age of 10 member with old man = 10 × 4 = 40 Total present age of 10 member = x + 40 Again let present age of younger member = y Total present age of 10 new member = x + y According to question. x + 40 / 10 = x + y/ 10 x + 40 = x + y y = 40 Age of younger member = 40

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