Average Practice Test 3

Question : 17 of 40

Marks: +1, -0

The average age of a family of 10 members is 20 years. If the age of the youngest member of the family is10 years, then the average age of the members of the family just before the birth of the youngest member is approximately equal.

$14 2/11$
$9 1/11$
$7 1/7$
$11 1/9$

Validate

Solution:

Average age of the family of 10 members = 20 years
Total age of the family = 200 years
According to the statement,

={200-10-90}/9=100/9=11 1/9

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