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Railways R.R.C. (Bilaspur) Solved Paper Held on 24-11-2013

  • question_answer
    A sum of Rs. 12,500 becomes Rs. 15,500 in 4 years at the rate of simple interest, what is the rate of interest?

    A) 3%                               

    B) 4%

    C) 5%                               

    D) 6%

    Correct Answer: D

    Solution :

    Let rate of interest = r% then,     Amount=\[sum\,\,\left( \frac{rt}{100}+1 \right)\] \[15500=12500\,\,\left( \frac{r\times 4}{100}+1 \right)\] \[\frac{r\times 4}{100}=\frac{15500}{12500}-1\] \[\frac{r\times 4}{100}=\frac{3000}{12500}\] \[r=\frac{3000\times 100}{12500\times 4}\] \[r=6%\]


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