The average age of a family of 6 members...

The average age of a family of 6 members is 22 yrs. If the age of the youngest member be 7 yrs, then what was the average age of the family at the birth of the youngest member?

A

15 years

B

17 years

C

17.5 years

D

18 years

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The correct Answer is:

D

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