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At present a father’s age is 30 years more than that of his only son. What was his age when the son was born?
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- 40 years
- 30 years
- 35 years
- 25 years
Correct Option: B
Suppose the age of son at present = P years
∴ Present age of the father = Present age of son + 30 years
Present age of the father = P + 30 years
Age of father at the birth of his son = Present age of the father - Present age of son = ( P + 30 ) – P = 30 years