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SSC Sample Paper Mock Test-13 SSC CGL Tear-II Paper-1

  • question_answer
    The simple interest on a sum of money is \[\frac{1}{9}\]of the principal and the number of years is equal to the rate per cent per annum. The rate of interest per annum is

    A)  \[1\frac{1}{9}%\]

    B)  \[2\frac{2}{3}%\]

    C)  \[3%\]  

    D)  \[3\frac{1}{3}%\]

    Correct Answer: D

    Solution :

    If the rate of interest by R% per annum, then \[\text{Rate=}\frac{\text{SI }\!\!\times\!\!\text{ 100}}{\text{Principal }\!\!\times\!\!\text{ Time}}\] \[\Rightarrow \]\[R=\frac{\frac{1}{9}\times 100}{1\times R}\]             \[\Rightarrow \]\[{{R}^{2}}=\frac{100}{9}\]             \[\therefore \]\[R=\frac{10}{3}=3\frac{1}{3}%\]


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