Exercise :: Compound Interest  General Questions
11.  Simple interest on a certain sum of money for 3 years at 8% per annum is half the compound interest on Rs. 4000 for 2 years at 10% per annum. The sum placed on simple interest is: 

Answer: Option C Explanation:

12.  If the simple interest on a sum of money for 2 years at 5% per annum is Rs. 50, what is the compound interest on the same at the same rate and for the same time? 

Answer: Option A Explanation:
C.I. = Rs. (551.25  500) = Rs. 51.25 
13.  The difference between simple interest and compound on Rs. 1200 for one year at 10% per annum reckoned halfyearly is: 

Answer: Option B Explanation:
Difference = Rs. (123  120) = Rs. 3. 
14.  The difference between compound interest and simple interest on an amount of Rs. 15,000 for 2 years is Rs. 96. What is the rate of interest per annum? 

Answer: Option A Explanation:
R = 8. Rate = 8%. 
15.  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: 

Answer: Option B Explanation: Let the sum be Rs. P.
Sum = Rs . 2500.
