A man is 48 years older than his son. In four years, his age will be twice the age of his son. The present age of his son is:
Explanation:
Let the son's present age be x years. Then, man's present age = (x + 48) years.
In four years, his age will be twice the age of his son.
∴ (x + 48) + 4 = 2(x + 4)
⇒ x + 52 = 2x + 8
⇒ x = 44.
Hence, option (d).
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