The average age of 8 persons in a committee is increased by 2 years when two men whose ages are 35 years and 45 years are replaced by two new men. The average age of the two new men is (in years)
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average age of 8 persons = x
then total age = 8x
total of replaced ages =80
let 2 men = 2k
8x-80+2k/8 = x+2
8x-8x+2k = 80+16
2k = 96
k = 48
ans: 48
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