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The age of Dr. Pandey is four times the age of his son. After 10 years, the age of Dr. Pandey will be twice the age of his son. The present age of Dr. Pandey’s son is :
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- 4 years
- 5 years
- 6 years
- 8 years
Correct Option: B
Suppose the present age of son = P years
Therefore, the present age of Dr. Pandey = 4P years
According to question ,
After 10 years, ( The present age of Dr. Pandey + 10 yaers ) = 2 ( the present age of son + 10 years )
4P + 10 = 2 (P + 10)
⇒ 4P + 10 = 2P + 20
⇒ 4P – 2P = 20 – 10
&rArr 2P = 10
| ∴ P = | = 5 years | 2 |
Therefore , The present age of Dr. Pandey’s son is 5 years .
