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Railways Sample Paper RRB (Group D) Sample Test Paper-3

  • question_answer
    What is the compound interest (in Rs.) on Rs.12500 at the rate of 12% per annum compounded yearly for 2 years?

    A)  3000   

    B)  2980

    C)  3050               

    D)  3180

    Correct Answer: D

    Solution :

    [d] Here, P=12500 R=12% T= 2 years C.I=? \[\therefore \,\,C.I.=P\,\,{{\left( 1+\frac{r}{100} \right)}^{n}}-p\] \[=12500\,\,{{\left( 1+\frac{12}{100} \right)}^{2}}-12500\] \[=12500\times \frac{28}{25}\times \frac{28}{25}-\,12500\] \[=15680-\,12500=3180\] Compound interest =Rs. 3180


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