Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-12

  • question_answer
    How much would a sum of Rs. 16000 amount to in 2 yr time at 10% per annum compound interest, interest being paid half yearly?

    A)  Rs. 19448        

    B)  Rs. 717423

    C)  Rs. 19880        

    D)  Rs. 18973

    Correct Answer: A

    Solution :

    \[A=P{{\left[ 1+\frac{R}{100} \right]}^{T}}=16000{{\left[ 1+\frac{10}{2\times 100} \right]}^{4}}\] \[\left[ R=\frac{10}{2}=5%,T=2\times 2=4\,\,half/yr \right]\]\[=16000{{\left( \frac{21}{20} \right)}^{4}}\] \[=16000\times \frac{21}{20}\times \frac{21}{20}\times \frac{21}{20}\times \frac{21}{20}=\]Rs.19448.1

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