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Simple Interest in Aptitude MCQ Quiz (Multiple Choice Questions And Answers)

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21.  In how many years will a sum of money doubles itself at 5% per annum on simple interest?

  • 10 years
  • 20 years
  • 40 years
  • 5 years

22. 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?

  • 12 years
  • 24 years
  • 12 ½ years
  • 11 years

23.  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?

  • 20 years
  • 40 years
  • 10 years
  • 5 years

24.  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?

  • ratio 3:4
  • ratio 1:2
  •  ratio 4:3
  • ratio 2:1

25. 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?

  • Rs. 600
  • Rs. 650
  •  Rs.640
  • Rs. 620