In a group of 8 boys 2 men aged at 21 and 23 were replaced two new boys Due to this the average cost...........

Quantitative Aptitude ( CCS) Average

In a group of 8 boys, 2 men aged at 21 and 23 were replaced two new boys. Due to this the average cost of the group increased by 2 years. What is the average age of the 2 new boys?

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Explanation:

Average of 8 boys increased by 2, this means the total age of boys increased by 8*2 = 16 yrs
So sum of ages of two new boys = 21+23+16 = 60
Average of these = 60/2 = 30