When principal = Rs. S, rate of interest = 2r % p.a., then a person will get after 3 years at compound interest = ?
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: Option B
Solution(By Examveda Team)
$$\eqalign{ & {\text{According to the question}} \cr & {\text{Principal = Rs S}} \cr & {\text{Rate }}\% {\text{ = 2r}}\,\% {\text{ p}}{\text{.a}}{\text{.}} \cr & {\text{Time = 3 years}} \cr & \therefore {\text{A = P}}{\left( {1 + \frac{{\text{r}}}{{100}}} \right)^T} \cr & \Leftrightarrow {\text{A = S}}{\left( {1 + \frac{{{\text{2r}}}}{{100}}} \right)^3} \cr & \Leftrightarrow {\text{A = S}}{\left( {1 + \frac{{\text{r}}}{{50}}} \right)^3} \cr} $$Related Questions on Compound Interest
A. Rs. 120
B. Rs. 121
C. Rs. 122
D. Rs. 123
E. None of these
A. 625
B. 630
C. 640
D. 650
E. None of these
A. Rs. 2160
B. Rs. 3120
C. Rs. 3972
D. Rs. 6240
E. None of these
A. Rs. 2.04
B. Rs. 3.06
C. Rs. 4.80
D. Rs. 8.30
Join The Discussion