a) 2 times
b) $$2\frac{1}{2}\,{\text{times}}$$
c) $$2\frac{3}{4}\,{\text{times}}$$
d) 3 times
Answer: a
Explanation:
$$\eqalign{
& {\text{Let}}\,{\text{Ronit’s}}\,{\text{present}}\,{\text{age}}\,{\text{be}}\,x\,{\text{years}}. \cr
& {\text{Father’s}}\,{\text{present}}\,{\text{age}}\, = \left( {x + 3x} \right)\,{\text{years}} \cr
& = 4x\,{\text{years}} \cr
& \left( {4x + 8} \right) = \frac{5}{2}\left( {x + 8} \right) \cr
& 8x + 16 = 5x + 40 \cr
& 3x = 24 \cr
& \Rightarrow x = 8 \cr
& {\text{Required}}\,{\text{times}} \cr
& = \frac{{ {4x + 16} }}{{ {x + 16} }} \cr
& = \frac{{48}}{{24}} \cr
& = 2 \cr} $$
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