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Compound Interest problems


  • 1. The difference between simple interest and compound interest of a certain sum of money at 20% per annum for 2 years is Rs. 56. Then the sum is :

  • Options
  • A. Rs. 3680
  • B. Rs. 2650
  • C. Rs. 1400
  • D. Rs. 1170
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  • 2. Compound interest on a certain sum of money at 20% per annum for 2 years is Rs.5995. What is the SI on the same money at 8% per annum for 6 years ?

  • Options
  • A. Rs. 5989
  • B. Rs. 6540
  • C. Rs. 7844
  • D. Rs. 6789
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  • 3. A certain sum is invested for 2 years in scheme M at 20% p.a. compound interest (compounded annually), Same sum is also invested for the same period in scheme N at k% p.a. simple interest. The interest earned from scheme M is twice of that earned from scheme N. What is the value of k?

  • Options
  • A. 7
  • B. 11
  • C. 9
  • D. 13
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  • 4. Find the compound interest on Rs. 6,500 for 4 years if the rate of interest is 10% p.a. for the first 2 years and 20% per annum for the next 2 years?

  • Options
  • A. Rs. 3845
  • B. Rs. 4826
  • C. Rs. 5142
  • D. Rs. 4415
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  • 5. What is the interest rate per annum, if a sum of money invested at compound interest amount to Rs. 2400 in 3 years and in 4 years to Rs. 2,520?

  • Options
  • A. 3.5%
  • B. 4%
  • C. 5%
  • D. 6.5%
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  • 6. A sum is equally invested in two different schemes on CI at the rate of 15% and 20% for two years. If interest gained from the sum invested at 20% is Rs. 528.75 more than the sum invested at 15%, find the total sum?

  • Options
  • A. Rs. 7000
  • B. Rs. 4500
  • C. Rs. 9000
  • D. Rs. 8200
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  • 7. What is the difference between the compound interests on Rs. 5000 for 11?2 years at 4% per annum compounded yearly and half-yearly?

  • Options
  • A. Rs. 1.80
  • B. Rs. 2.04
  • C. Rs. 3.18
  • D. Rs. 4.15
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  • 8. At a certain rate of interest the compound interest of 3 years and simple interest of 5 years for certain sum of money is respectively Rs. 1513.2 and Rs. 2400. Find the common rate of interest per annum ?

  • Options
  • A. 5%
  • B. 6%
  • C. 4%
  • D. 3%
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  • 9. Find the compound interest on Rs. 2680 at 8% per annum for 2 years ?

  • Options
  • A. Rs. 664.21
  • B. Rs. 548.68
  • C. Rs. 445.95
  • D. Rs. 692.57
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  • 10. The compound interest earned by Sunil on a certain amount at the end of two years at the rate of 8% p.a. was Rs.2828.80. Find the total amount that Sunil got back at the end of two years in the form of principal plus interest earned ?

  • Options
  • A. Rs. 11828.80
  • B. Rs. 19828.80
  • C. Rs. 9828.80
  • D. Rs. 19328.80
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