# 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

Q121. **The sum of money at compound interest amounts to thrice itself in 3 years. In how many years will it be 9 times itself?**

1.  18
2.  12
3.  9
4.  6

Solution : 6
Q122. **A sum of money placed at compound interest doubles itself in 4 years. In how many years will it amount to eight times itself?**

1.  16
2.  8
3.  12
4.  20

Solution : 12
Q123. **A sum of money deposited at C.I. amounts to Rs.2420 in 2 years and to Rs.2662 in 3 years. Find the rate percent?**

1.  15%
2.  10%
3.  7 1/2 %
4.  8%

Solution : 10%
Q124. **Find the sum lend at C.I. at 5 p.c per annum will amount to Rs.441 in 2 years?**

1.  Rs.420
2.  Rs.400
3.  Rs.375
4.  Rs.380

Solution : Rs.400

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Q125. **A property decreases in value every year at the rate of 6 1/4% of its value at the beginning of the year its value at the end of 3 years was Rs.21093. Find its value at the beginning of the first year?**

1.  Rs.25600.24
2.  Rs.32000.50
3.  Rs.18060.36
4.  Rs.18600

Solution : Rs.25600.24
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