Question

The 2 age of 80 boys in a class is 15. The 2 age of group of 15 boys in the class is 16 and the 2 of another 25 boys in the class is 14. What is the 2 age of the remaining boys in the class ?
A) 12.24 yrs
B) 13.25 yrs
C) 16 yrs
D) 15.25 yrs

Answer 1

Total ages of 80 boys = 15 x 80 = 1200 yrs.
Total age of 16 boys = 15 x 16 = 240 yrs
Total age of 25 boys = 14 x 25 = 350 yrs.
Average age of remaining boys = 1200 - (240+350) / 80 - (25+15) = 610/41 = 15.25 yrs

Answer 2

Heyy mate ❤✌✌❤

Total ages of 80 boys = 15 x 80 = 1200 yrs.

Total age of 16 boys = 15 x 16 = 240 yrs

Total age of 25 boys = 14 x 25 = 350 yrs.

Average age of remaining boys = 1200 - (240+350) / 80 - (25+15)

= 610/41

= 15.25 yrs.
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