The average age of 8 men is increased by 2 years when two of them whose ages are 21 years and 23 years are replace
by two new men. The average age of the two new mentis:
(1) 22 years
(2) 24 years (3) 28 years (4) 30 years
(5) 32 years
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Answer:
23 and 21 years because there were replaced by two new men ..so there is no option
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