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SSC Sample Paper SSC CGL - Sample Paper-22

  • question_answer
    At what rate per cent per annum calculated in simple interest will a sum of money double in 10 yr?

    A) 10%                 

    B) 12%

    C) 12.5%              

    D) 13.5%

    Correct Answer: A

    Solution :

    Let the rate of interest \[=R%\] \[\therefore \] \[P=Rs.\,x,\] \[{{S}_{1}}=Rs.\,x,\] \[T=10\,yr\] \[\because \]       \[SI=\frac{P\times R\times T}{100}\] \[\therefore \]      \[x=\frac{x\times R\times 10}{100}\] \[\Rightarrow \]   \[R=10%\]        


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