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SSC Sample Paper SSC CGL - Sample Paper-23

  • question_answer
    At what rate per cent per annum simple interest, will a sum of money triple itself in 25 yr?

    A) 8%       

    B) 9%

    C) 10%                             

    D) 12%

    Correct Answer: A

    Solution :

    Let principal amount \[=P\] As amount \[=3P,\] \[T=25\,yr\] \[\therefore \]      \[SI=3P-P=2P\] \[\because \]       \[\text{Rate}\,\text{=}\,\frac{\text{100 }\!\!\times\!\!\text{ SI}}{\text{Principal}\,\text{ }\!\!\times\!\!\text{ T}}\]             \[\text{=}\frac{\text{100 }\!\!\times\!\!\text{ 2P}}{\text{P }\!\!\times\!\!\text{ 25}}=8%\]                


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