2. Sample Papers
  3. Railways
  4. Quantitative Aptitude
  5. Compound Interest

Railways Quantitative Aptitude Compound Interest Sample Paper Simple Interest & Compund Interest Sample Test Paper-15

  • question_answer
    A certain sum of money invested at a certain rate of compound interest doubles in 5 years. In how many years will it become 4 times?

    A)  10 years          

    B)  12 years

    C)  15 years          

    D)  20 years

    Correct Answer: A

    Solution :

    [a] \[{{2}^{2}}=4.\] \[\therefore \] The amount will become 4 times in \[2\times 5=10\,\,years.\]


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