a) 60 years
b) 54 years
c) 48 years
d) 50 years
Answer: b
Explanation: Let the son’s age be $$x$$ years ,
Then Mr. Sanyal’s age = 3$$x$$ years
$$\eqalign{
& \therefore \frac{{3x + 6}}{{x + 6}} = \frac{5}{2} \cr
& \Rightarrow 2\left( {3x + 6} \right) = 5\left( {x + 6} \right) \cr
& \Rightarrow 6x + 12 = 5x + 30 \cr
& \Rightarrow x = 18 \cr} $$
∴ Present age of Mr. Sanyal = 3x years
= (3 × 18) years
= 54 years
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