a) $${\text{Rs}}{\text{. }}\frac{{6{\text{Sr}}}}{{100}}$$
b) $${\text{Rs}}{\text{. S}}{\left( {1 + \frac{{\text{r}}}{{50}}} \right)^3}$$
c) $${\text{Rs}}{\text{. S}}{\left( {1 + \frac{{\text{r}}}{{100}}} \right)^3}$$
d) $${\text{Rs}}{\text{. 3S}}{\left( {1 + \frac{{\text{r}}}{{100}}} \right)^3}$$
Answer: b
Explanation:
$$\eqalign{
& {\text{Principal = Rs S}} \cr
& {\text{Rate }}\% {\text{ = 2r}}\,\% {\text{ p}}{\text{.a}}{\text{.}} \cr
& {\text{Time = 3 years}} \cr
& {\text{A = P}}{\left( {1 + \frac{{\text{r}}}{{100}}} \right)^T} \cr
& {\text{A = S}}{\left( {1 + \frac{{{\text{2r}}}}{{100}}} \right)^3} \cr
& {\text{A = S}}{\left( {1 + \frac{{\text{r}}}{{50}}} \right)^3} \cr} $$
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