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SSC Sample Paper SSC (Group-C) Sample Test Paper-4

  • question_answer
    A sum of money becomes double in 3 years at compound interest compounded annually. At the same rate, in how many years will it become four times of itself?

    A)  4                                

    B)  6

    C)  \[6.4\]                         

    D)  \[7.5\]

    Correct Answer: B

    Solution :

     \[A=P{{\left( 1+\frac{R}{100} \right)}^{T}}\] \[\Rightarrow \]            \[2=1{{\left( 1+\frac{R}{100} \right)}^{3}}\] On squaring both sides. \[4=1{{\left( 1+\frac{R}{100} \right)}^{6}}\] \[\therefore \]  Time = 6 years


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