The simple interest on a certain sum is one-eighth of the sum when the number of years is equal to half of the rate percentage per annum. Find the simple interest (in Rs.) on Rs. 15,000 at the same rate of simple interest for 8 years.
A. 5,800
B. 5,000
C. 6,000
D. 5,250
Answer: Option C
Solution(By Examveda Team)
$$\eqalign{ & {\text{Let sum}} = P \cr & \frac{{P \times r \times t}}{{100}} = \frac{1}{8}P \cr & rt = \frac{{100}}{8} = \frac{{25}}{2}\,.....\,\left( {\text{i}} \right) \cr & {\text{Since }}t = \frac{r}{2} \cr & {\text{From equation}}\left( {\text{i}} \right) \cr & r \times \frac{r}{2} = \frac{{25}}{2} \cr & r = 5\% \cr & {\text{If }}P = 1500 \cr & t = 8{\text{ years}} \cr & {\text{S}}{\text{.I}}{\text{.}} = \frac{{P \times r \times t}}{{100}} \cr & = \frac{{15000 \times 8 \times 5}}{{100}} \cr & = {\text{Rs}}{\text{. }}6,000 \cr} $$Related Questions on Interest
Find the simple interest on Rs. 5200 for 2 years at 6% per annum.
A. Rs. 450
B. Rs. 524
C. Rs. 600
D. Rs. 624
Rs. 1200 is lent out at 5% per annum simple interest for 3 years. Find the amount after 3 years.
A. Rs. 1380
B. Rs. 1290
C. Rs. 1470
D. Rs.1200
E. Rs. 1240
Interest obtained on a sum of Rs. 5000 for 3 years is Rs. 1500. Find the rate percent.
A. 8%
B. 9%
C. 10%
D. 11%
E. 12%
Rs. 2100 is lent at compound interest of 5% per annum for 2 years. Find the amount after two years.
A. Rs. 2300
B. Rs. 2315.25
C. Rs. 2310
D. Rs. 2320
E. None of these
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