Average Practice Test 6

Question : 2 of 40

Marks: +1, -0

3 years ago, the average age of family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. What is the present age of the baby?

3 years
2 years
$1 1 /2$ years
1 year

Validate

Solution:

Let the present age of the baby be x years, then

{5×20+x}/6=17

⇒ 100 + x = 102

∴ x = 2

years

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