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Multiple Choice Questions

The average age of 5 members of a family is 24 years If the youngest member is n...........

Quantitative Aptitude (RRB NTPC) Average

The average age of 5 members of a family is 24 years. If the youngest member is 8 years old, then what was the average age (in years) of the family at the time of the birth of the youngest member?

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Explanation:

Correct option is B)

Total age of the family=5×24=120 years
Total age 8 years ago=120−(5×8)=80 years
Number of members at the time of birth of youngest member =4

Required average=80/4 = 20

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Ruchika Pathak

Total age of family 6 years ago = 144 years

sunny bhonsle

updated please check.

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The average age of 5 members of a family is 24 years If the youngest member is n...........

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Explanation:

Total age of the family=5×24=120 years Total age 8 years ago=120−(5×8)=80 years Number of members at the time of birth of youngest member =4

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Total age of the family=5×24=120 years
Total age 8 years ago=120−(5×8)=80 years
Number of members at the time of birth of youngest member =4