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SSC Sample Paper SSC (Group-C) Sample Test Paper-8

  • 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 percent 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 be R% p.a. then. Rate \[=\frac{SI\times 100}{Principal\times Time}\] \[\Rightarrow \]            \[R=\frac{\frac{1}{9}\times 100}{1\times R}\] \[\Rightarrow \]            \[{{R}^{2}}=\frac{100}{9}\] \[\Rightarrow \]            \[R=\frac{10}{3}=3\frac{1}{3}%\]


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