# Arithmetic Aptitude :: Problems on Ages

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## 9. Five years ago the average age of a family of six members was 20 years. A baby is born and now the average age is 22 years. How old is the baby at present ?

**Answer:**

**Option D**

**Explanation :**

Lets assume the age of all the 6 people = 20 years.

After 5 years i.e. now their ages will be 25 years.

Total age of all the 6 will be = 25*6 = 150

Including baby's age, avg is 22 years

Let x be the age of baby.

(150+x)/7 = 22

=> x = 4 years.

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