Question:
The compound interest on a certain sum for 2 years at 10% per annum is Rs. 525. The simple interest on the same sum for double the time at half the rate percent per annum is:
[A].Rs. 400
Rs. 500
Rs. 600
Rs. 800
The compound interest on a certain sum for 2 years at 10% per annum is Rs. 525. The simple interest on the same sum for double the time at half the rate percent per annum is:
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
Let the sum be Rs. P.
| Then, | P | 1 + | 10 | 2 | – P | = 525 | ||||
| 100 |
| P | 11 | 2 | – 1 | = 525 | |||||
| 10 |
| P = | 525 x 100 | = 2500. | ||
| 21 |
Sum = Rs . 2500.
| So, S.I. = Rs. | 2500 x 5 x 4 | = Rs. 500 | ||
| 100 |