# 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

Q76. **An amount of Rs. 3000 becomes Rs. 3600 in four years at simple interest. If the rate of interest was 1% more, then what was be the total amount?**

1.  Rs. 3800
2.  Rs. 3780
3.  Rs. 3720
4.  Cannot be determined

Solution : Rs. 3720
Q77. **A certain sum becomes four times itself at simple interest in eight years. In how many years does it become ten times itself?**

1.  21
2.  26
3.  23
4.  None of these

Solution : None of these
Q78. **At what rate of interest is an amount doubled in two years, when compounded annually?**

1.  30%
2.  41.4%
3.  45.2%
4.  73.2%

Solution : 41.4%
Q79. **Vijay lent out an amount Rs. 10000 into two parts, one at 8% p.a. and the remaining at 10% p.a. both on simple interest. At the end of the year he received Rs. 890 as total interest. What was the amount he lent out at 8% pa.a?**

1.  Rs. 6000
2.  Rs. 5500
3.  Rs. 4500
4.  Rs. 5000

Solution : Rs. 5500

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Q80. **Anil invested a sum of money at a certain rate of simple interest for a period of five years. Had he invested the sum for a period of eight years for the same rate, the total intrest earned by him would have been sixty percent more than the earlier interest amount. Find the rate of interest p.a.**

1.  6%
2.  9%
3.  12.5%
4.  Cannot be determined

Solution : Cannot be determined
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