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Railways Sample Paper RRB (Assistant Loco Pilot) Sample Test Paper-15

  • question_answer
    Simple interest on a certain sum is 16 over 25 of the sum. Find the rate per cent and time, if both are equal.

    A)  8% and 8 years  

    B)  6% and 6 years

    C)  10% and 10 years

    D)  12% and 12 years

    Correct Answer: A

    Solution :

    \[\frac{16}{25}P=\frac{P\times R\times R}{100}\] \[\Rightarrow \]  \[{{R}^{2}}=\frac{1600}{25}\Rightarrow R=\frac{40}{5}=8%\] Also, time =8 years


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