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  • Question
  • At what rate percent per annum will a sum of money double in 8 years.


  • Options
  • A. 12.5%
  • B. 13.5%
  • C. 11.5%
  • D. 14.5%

  • Correct Answer
  • 12.5% 

    Explanation

    Let principal = P, Then, S.I.= P and Time = 8 years

     

    We know that S.I. = PTR/100

     

    Rate = [(100 x P)/ (P x 8)]% = 12.5% per annum.

  • Tags: GRE, CAT, Bank Exams, Bank PO, Bank Clerk

    More questions

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      What is the annual income by investing Rs. 3000 in 6% stock at 120?

    • Options
    • A. Rs. 150
    • B. Rs. 100
    • C. Rs. 200
    • D. Rs. 250
    • Discuss
    • 2. 
      The average age of 45 students in a class in 13 yr, 15 new students with an average age of 18 yr join the class. What is the average age of all the students in the class?

    • Options
    • A. 13.15 yr
    • B. 14.25 yr
    • C. 12.28 yr
    • D. 16.42 yr
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    • 3. 
      A batsman has a certain average of runs for 14th innings. He scores 72 runs in the 15th innings, thus his average increased by 2. Find the average after 15th innings.

    • Options
    • A. 44
    • B. 46
    • C. 42
    • D. 48
    • Discuss
    • 4. A man took loan from a bank at the rate of 12% p.a. simple interest. After 3 years he had to pay Rs. 5400 interest only for the period. The principal amount borrowed by him was:

    • Options
    • A. Rs. 2000
    • B. Rs. 10,000
    • C. Rs. 15,000
    • D. Rs. 20,000
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    • 5. 
      If 7 kg of tea of price ? 72 per kg is blended with 33 kg of tea of ? 87 per kg and 35 kg of ? 85 per kg and the mixture is sold at 15% profit, then what is the selling price of the mixture?

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    • A. ? 80.66 per kg
    • B. ? 102.33 per kg
    • C. ? 91.22 per kg
    • D. ?. 97.37 per kg
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    • 6. 
      A runner runs 1 1? 4 laps of a 5 lap race. What fractional part of the race remains to be run?

    • Options
    • A. 15?4
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    • 7. Goods were bought for Rs. 600 and sold the same for Rs. 688.50 at a credit of 9 months and thus gaining 2% The rate of interest per annum is:

    • Options
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      3
    • B.
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    • C.
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    • 8. 
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      1
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      125

    • Options
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    • Discuss
    • 9. 
      (4 x 4 x 4 x 4 x 4 x 4) 5 x (4 x 4 x 4) 8 ÷ (4) 3 = (64) ?

    • Options
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    • 10. 
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