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 sum of money, at compound interest, yields Rs.  200 and Rs. 220 at the end of first and second year respectively. The rate % is

    A)  20       

    B)         15

    C)  10       

    D)  5

    Correct Answer: C

    Solution :

    [c] A = Rs. 220; P = Rs. 200; R =? n = 1 year. \[A=P{{\left( 1+\frac{R}{100} \right)}^{n}}\] \[220=200{{\left( 1+\frac{R}{100} \right)}^{n}}\] \[1+\frac{R}{100}=\frac{220}{200}\] R = 10%


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