Banking Sample Paper RRB Assistant (PT) Sample Test Paper-1

  • question_answer The difference between the interest received by Ajay and Bipul is Rs. 150. When they invest Rs. 2500 each for 4 years what is the difference in the rate of interest?

    A)  1.5%

    B)  2.5%

    C)  3.7%

    D)  4.2%

    E)  1.7%

    Correct Answer: A

    Solution :

    \[SI=\frac{P\times R\times T}{100}\] Now,\[{{S}_{1}}-{{S}_{2}}=\frac{P\times {{R}_{1}}\times T}{100}-\frac{P\times {{R}_{2}}\times T}{100}\] or,\[150=\frac{PT}{100}({{R}_{1}}-{{R}_{2}})\] or,\[150=\frac{2500\times 4}{100}({{R}_{1}}-{{R}_{2}})\] \[\therefore \]\[{{R}_{1}}-{{R}_{2}}=\frac{150\times 100}{2500\times 4}=1.5%\]

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