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The sum of ages of 4 children born at intervals of 4 years each is 60. What is the age of the youngest child?
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- 7
- 9
- 10
- 12
Correct Option: B
Suppose the age of the youngest child = P years
Therefore, the ages of the other children = P + 4, P + 8 and P + 12 years
According to question ,
The sum of ages of 4 children born at intervals of 4 years each = 60.
P + P + 4 + P + 8 + P + 12 = 60
⇒ 4P + 24 = 60
⇒ 4P = 60 – 24 = 36
| ⇒ P = | = 9 years | 4 |
Therefore , the age of the youngest child is 9 years .
