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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-1

  • question_answer
    The SI of Rs. 600 for 4 yr and that of Rs. 600 for 2 yr together is Rs. 180. What is the rate of interest per annum?

    A)  \[6\frac{1}{4}%\]         

    B)  4%

    C)  5%                  

    D)  5.5%

    Correct Answer: C

    Solution :

    Rate of interest = r%. Then,\[\frac{600\times 4\times r}{100}+\frac{600\times 2\times r}{100}=180\] \[\Rightarrow \,\]             \[\frac{600\times r\times 6}{100}=180\] \[\Rightarrow \,\]                         \[36r=180\] \[\Rightarrow \,\]                         \[\,r=\frac{180}{36}=5%\]


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