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Saturday, June 27, 2020

The average age of the family of five members is 24. If the present age of youngest member is 8 years, then what was the average age of the family at the time of the birth of the youngest member ?

The average age of the family of five members is 24. If the present age of youngest member is 8 years, then what was the average age of the family at the time of the birth of the youngest member ?
A20 years
B16 years
C12 years
D18 years

Answer is 16 years

Explanation:

 Total age of 5 member family = 24 × 5 = 120 years

Total age 8 years ago = 120 - 5 × 8 = 80 years 

Required average age
= \(\frac{18}{5} = 16 \) years

 

Nithin K
answered Apr 30 '2017 at 14:20

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