Average age of 12 men is (i) increased (ii) decreased by 1/4 th years, when one of them whose age is 40 years is replaced by a new man. What is the age of the new man?
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Step-by-step explanation:
(12×.25) + 40
= 40+3
=43
So the age of new person = 43
because increased avg age is .25 of 1 men therefore the total increase = 12×.25 = 3
who went out was 40 so we have to add 3 to forty, so the answer will be 43
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