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Discussion :: True Discount

  1. If Rs. 10 be allowed as true discount on a bill of Rs. 110 due at the end of a certain time, then the discount allowed on the same sum due at the end of double the time is:

  2. A.

    Rs. 20

    B.

    Rs. 21.81

    C.

    Rs. 22

    D.

    Rs. 18.33

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    Answer : Option D

    Explanation :

    S.I. on Rs. (110 - 10) for a certain time = Rs. 10.

     

    S.I. on Rs. 100 for double the time = Rs. 20.

     

    T.D. on Rs. 120 = Rs. (120 - 100) = Rs. 20.

     

    T.D. on Rs. 110 = Rs\([\frac { 20 } {1 2 0}*110]\)= Rs. 18.33


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