# 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

Q61. **A sum of money becomes triple itself in 5 years at simple interest. How many years will it become six times at the same rate?**

1.  12 1/2 years
2.  12 years
3.  11 1/2 years
4.  11 years

Solution : 12 1/2 years
Q62. **A sum of money becomes double itself in 8 years at simple interest. How many times will it become 10 years at the same rate?**

1.  2 1/4
2.  4 1/4
3.  5 1/4
4.  None of these

Solution : 2 1/4

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Q63. **A part of certain sum of money is invested at 9% per annum and the rest at 12% per annum, if the interest earned in each case for the same period is equal, then ratio of the sums invested is?**

1.  2:3
2.  3:4
3.  4:3
4.  None of these

Solution : 4:3
Q64. **The equal amounts of money are deposited in two banks each at 15% per annum for 3.5 years and 5 years respectively. If the difference between their interests is Rs.144, find the each sum?**

1.  Rs.3467
2.  Rs.640
3.  Rs.500
4.  None of these

Solution : Rs.640

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Q65. **A sum of Rs. 2665 is lent into two parts so that the interest on the first part for 8 years at 3% per annum may be equal to the interest on the second part for 3 years at 5% per annum. Find the second sum?**

1.  Rs.1678
2.  Rs.1640
3.  Rs.2341
4.  None of these

Solution : Rs.1640
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