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SSC Sample Paper Mock Test-6 SSC CGL Tear-II Paper-1

  • question_answer
    If a sum doubles at simple interest in 12 yr, the rate of interest per annum is

    A)  \[16\frac{2}{3}%\]

    B)  \[7.5%\]

    C)  \[8\frac{1}{3}%\]

    D)  \[10%\]

    Correct Answer: C

    Solution :

    Let the principal be Rs. x \[\therefore \]      Amount = Rs. 2x \[\therefore \]      Interest = Rs. \[(2x-x)\]= Rs. x \[\therefore \] Rat\[=\frac{\text{SI }\!\!\times\!\!\text{ 100}}{\text{Principal }\!\!\times\!\!\text{ Time}}\text{=}\frac{x\times 100}{x\times 12}=\frac{25}{3}=8\frac{1}{3}%\]


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