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SSC Sample Paper SSC CGL - Sample Paper-29

  • question_answer
    The simple interest on a sum of money is \[\frac{1}{4}\] of the principal. If number of years is equal to rate per cent per annum, the interest rate is

    A) 5.0%    

    B) 5.1%

    C) 5.2%                

    D) 4.8%

    Correct Answer: A

    Solution :

    Let the principal\[=Rs.\,P\] \[\therefore \] Simple interest\[=Rs.\frac{P}{4}\] Let the number of years\[=t\,yr\] \[\therefore \] Rate of interest\[=t\,%\] Hence, \[\frac{P}{4}=\frac{P\times t\times t}{100}\] \[\Rightarrow \] \[{{t}^{2}}=25\]        \[\Rightarrow \] \[t=5\] 


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