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

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81. At simple interest, a sum doubles after 20 years. The rate of interest per annum is

  • 0.05
  • 0.06
  • 0.07
  • 0.04

82. A certain sum of money at simple interest amounts to Rs. 1012 in 2 ½ years and to Rs. 1067.20 in 4 years. The rate of interest per annum is:

  • 0.04
  • 0.08
  • 0.02
  • 0.12

83. The rate of interest on a sum of money is 4 % per annum for the first 2 years. 6 % per annum for the next 4 years and 8 % per annum for the period beyond 6 years. If the simple interest accrued by the sum for a total period of 9 years is Rs. 1120, what is the sum?

  •  Rs. 2000
  • Rs. 4000
  • Rs. 1000
  • Rs. 2400

84. How much simple interest will Rs. 2000 earn in 18 months at 6 % per annum?

  • Rs.180
  • Rs. 150
  • Rs. 90
  • Rs. 145

85. A man deposited Rs. 400 for 2 years. Rs.550 for 4 years and Rs.1200 for 6 years. He received Rs.1020 as the total simple interest. The rate of interest per annum is?

  • 0.1
  • 0.2
  • 0.05
  • 0.25