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True Discount

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  1. The simple interest and the true discount on a certain sum for a given time and at a given rate are Rs. 25 and Rs. 20 respectively. The sum is ?
    1. Rs. 500
    2. Rs. 200
    3. Rs. 250
    4. Rs. 100
Correct Option: D

Sum = [(S.I.) x (T.D.)] / [(S.I.) - (T.D.)] = Rs. (25 x 20) / (25 - 20)
= Rs. 100


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