The average age of a group of 15 players is 23 years. If the age of the coach be included, then the

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17 Jun 2021 AVERAGE AGE

The average age of a group of 15 players is 23 years. If the age of the coach be included, then the average increases by 6 months. Find the age of the coach.

OPtion

1) 28
2) 25
3) 27
4) 31
5) 35
6) 32
7) 34
8) 29
9) 33
10) None of the above

Solution

Total age of 15 Players = 23 x 15 = 345 years
Average age of 15 players and their coach = 23 years and 6 months = 23.5 years
Total age of 15 players and their coach = 23.5 x 16 = 376 years
Hence age of the coach = 376 – 345 = 31 years

Correct Option: 4 Best Solution (3)

SAYAN CHATTERJEE   3 years AGO

coach's age = (23.5*16-15"23)
= 31.
option 4.

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RAMADURAI NATESAN   3 years AGO

Total of ages including coach = 23.5 * 16 = 376
"" ''' excuding coach = 345
Age of coach = 31

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yashash singla   3 years AGO

avg age of 15 people= sum of age of people/total no of people
23=sum of age of people/15
sum of age of 15 people=345

avg age of 16 people=sum of age of 16 people/ no of people
23.5=sum of age of 16 people/16
sum of age of 16 people=346

age of coach = sum of age of 16 people -sum of age of 15 people
376-345=31

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