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SSC Sample Paper SSC CGL - Sample Paper-14

  • question_answer
    At what rate of simple interest per annum will a sum become \[\frac{7}{4}\] of itself in 4 yr?

    A) 18%                 

    B) \[18\frac{1}{4}%\]

    C) \[18\frac{3}{4}%\]        

    D) \[18\frac{1}{2}%\]

    Correct Answer: C

    Solution :

    Let the principal = Rs. x \[\therefore \]      Principal \[+\,\,SI=Rs.\frac{7x}{4}\] \[\therefore \]      \[SI=\frac{7x}{4}-x\]             \[=Rs.\frac{3x}{4}\] Rate \[\text{=}\frac{\text{SI }\!\!\times\!\!\text{ 100}}{\text{Principal }\!\!\times\!\!\text{ Time}}\]             \[=\frac{3x\times 100}{4\times x\times 4}=18\frac{3}{4}%\,\text{p}\text{.a}\text{.}\]       


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