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  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
    The difference between CI and SI on Rs. 8000 far 3 yrs at 2.5% p.a. is

    A)  Rs. 15.125       

    B)  Rs. 10.125

    C)  Rs. 18.125       

    D)  Rs. 19.125

    Correct Answer: A

    Solution :

    [a] \[\text{Difference=}\frac{Sum\times {{r}^{2}}(300+r)}{{{(100)}^{3}}}\] \[=\frac{8000\times 2.5\times 2.5(300+2.5)}{100\times 100\times 100}\] \[=\frac{8\times 25\times 25\times 3025}{100\times 100\times 100}=\frac{121}{8}=Rs.\,15.125\]


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