# Simple and Compound Interest

Simple and Compound Interest: Difference between simple and compound interest, Simple Interest Formula and Compound Interest Formula, Simple Interest Questions

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## Online Aptitude Questions with Answers on Simple and Compound Interest

Q46. **At what rate percent on simple interest will a sum of money double itself in 30 years?**

1.  3 1/3 %
2.  3 1/2%
3.  4 %
4.  4 1/2 %

Solution : 3 1/3 %
Q47. **A certain sum of money at simple interest amounted Rs.840 in 10 years at 3% per annum, find the sum?**

1.  Rs.500
2.  Rs.515
3.  Rs.525
4.  None of these

Solution : None of these
Q48. **In what time a sum of money double itself at 3% per annum simple interest?**

1.  29 years
2.  33 1/3 years
3.  23 1/3 years
4.  13 1/3 years

Solution : 33 1/3 years
Q49. **The simple interest on a sum of money will be Rs.600 after 10 years. If the principal is trebled after 5 years what will be the total interest at the end of the tenth year?**

1.  Rs.800
2.  Rs.900
3.  Rs.1200
4.  Rs.1500

Solution : Rs.1200

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Q50. **Sonika deposited Rs.8000 which amounted to Rs.9200 after 3 years at simple interest. Had the interest been 2% more. She would get how much?**

1.  Rs.9680
2.  Rs.9860
3.  Rs.9380
4.  Rs.9800

Solution : Rs.9680
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