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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-6

  • question_answer
    The sum of Rs. 550 amounts to Rs. 946 in 9 yr with simple interest. What is the rate of interest per cent annum

    A)  7                    

    B)  8  

    C)  9                    

    D)  6

    Correct Answer: B

    Solution :

    \[\because \]       \[SI=946-550=\]Rs. 396 \[\therefore \,\]    \[SI=\frac{P\times R\times T}{100}\] \[\Rightarrow \]   \[R=\frac{SI\times 100}{P\times T}\] \[\Rightarrow \]   \[R=\frac{396\times 100}{550\times 9}=8%\]


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