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Discussion :: Simple Interest

  1. A certain sum becomes Rs. 20720 in four years and 24080 in six years at simple interest. Find sum and rate of interest?
  2. A.
    Rs. 12000; 12% p.a.
    B.
    Rs. 14000; 12% p.a.
    C.
    Rs. 12000; 15% p.a.
    D.
    Rs. 14000; 15% p.a.
    E.
    None of these

    View Answer

    Workspace

    Answer : Option B

    Explanation :

    Let the interest for one year be x.

    As amount = Principal + Interest, we have 


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