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SSC Sample Paper Mock Test-19 SSC CGL Tear-II Paper-1

  • question_answer
    A sum of money becomes \[\frac{41}{40}\]of itself in \[\frac{1}{4}\text{yr}\] at a certain rate of simple interest The rate of interests per annum is

    A) 10%

    B)  1%             

    C)  2.5%

    D)  5%    

    Correct Answer: A

    Solution :

    Let the principal be Rs. 1. \[\therefore \] \[\text{SI}=\frac{41}{40}-1=\frac{1}{40}\] Now,     Rate \[\text{Rate=}\frac{\text{Interest }\!\!\times\!\!\text{ 100}}{\text{Principal }\!\!\times\!\!\text{ Time}}\] \[=\frac{\frac{1}{40}\times 100}{1\times \frac{1}{4}}=\frac{100\times 4}{40}=10%\]


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