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SSC Sample Paper Mock Test-18 SSC CGL Tear-II Paper-1

  • question_answer
    The compound interest on a certain amount at the annual rate of 10% for 2 yr is Rs. 1260. What would be the simple interest for the same amount for 4 yr while rate of interest applies is half of the previous one mentioned above?

    A) Rs. 400

    B)  Rs. 800

    C)  Rs. 960

    D)  Rs. 1200

    Correct Answer: D

    Solution :

    Suppose, the sum is Rs. x                      Then, \[\left[ x{{\left( 1+\frac{10}{100} \right)}^{2}}-x \right]=1260\] \[\Rightarrow \]   \[x\left[ {{\left( \frac{11}{10} \right)}^{2}}-1 \right]=1260\] \[\Rightarrow \]   \[x=\frac{1260\times 100}{21}=6000\] So, the sum is Rs.  6000.                      Now, simple interest \[=\frac{6000\times 4\times 5}{100}\]= Rs. 1200


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