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SSC Sample Paper Mock Test-9 SSC CGL Tear-II Paper-1

  • question_answer
    A sum becomes Rs. 4500 after two years and Rs. 6750 after four years at compound interest. The sum is

    A) Rs. 4000

    B)  Rs. 2500

    C)  Rs. 3000

    D)  Rs. 3050

    Correct Answer: C

    Solution :

    According to the question,
    \[P{{\left( 1+\frac{r}{100} \right)}^{2}}=4500\]             ?(i)
    \[P{{\left( 1+\frac{r}{100} \right)}^{4}}=6750\]             ?(ii)
    On dividing Eq. (ii) by Eq. (i), we get
    \[{{\left( 1+\frac{r}{100} \right)}^{2}}=\frac{6750}{4500}\]
    From Eq. (i) \[P\times \frac{6750}{4500}=4500\]
    \[\Rightarrow \]\[P=\frac{4500\times 4500}{6750}\]= Rs. 3000


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