###
**The average of 80 boys in a class is 15. The average age of a group of 15 boys in the class is 16 and the average age of another 25 boys in the class is 14. What is the average age of the remaining boys in the class?
**

A. 14
B. 14.75
C. 15.25
D. None of these
**Answer: Option C**

## Show Answer

Solution(By Apex Team)

$\begin{aligned}&\text{ Required average }\\
&=\frac{(15\times80)-[(16\times15)+(14\times25)]}{80-(15+25)}\\
&=\frac{1200-(240+350)}{40}\\
&=\frac{610}{40}\\
&=15.25\end{aligned}$

## Related Questions On Average

### Ajit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average19 people went to a hotel for combine dinner party 13 by 8 runs. His new average is:

A. 20B. 21

C. 28

D. 32

### Find the average of all the numbers between 6 and 34 which are divisible by 5.

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C. 24

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### If the arithmetic mean of 0, 5, 4, 3 is a, that of -1, 0, 1, 5, 4, 3 is b and that of 5, 4, 3 is c, then the relation between a, b, and c is.

A. a = b = cB. a : b : c = 3 : 2 : 4

C. 4a = 5b = c

D. a + b + c = 12