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Railways Sample Paper RRB (Assistant Loco Pilot & Technician) Sample Test Paper-10

  • question_answer
    There is 60% increase in an amount in 4 years at simple interest. What will be the C.I. of Rs. 12,000 after 3 years at the same rate?

    A)  Rs. 6250.50     

    B)  Rs. 6220.52

    C)  Rs. 6250.20   

    D)       Rs. 6220.50

    Correct Answer: A

    Solution :

     Let P = Rs. 100. Then, S.I. Rs. 60 and T = 4 years.        \[\therefore \] \[R=\left( \frac{100\,\,\,\,\,60}{100\,\,\,\,\,4} \right)=15%\] p.a. Now, P = Rs. 12000. T = 3 years and R = 15% p.a.        \[\therefore \] C.I. =Rs. \[\left[ 12000\,\left\{ {{\left( 1+\frac{15}{100} \right)}^{3}}\,\,\,\,1 \right\} \right]\] =Rs  \[\left( 12000\,\,\frac{4167}{8000} \right)\] = Rs. \[6250.50.\]


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