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If Rs.20 is the True Discount on Rs260due after a certain time.What wil be true discount on the same sum due after half of the former time, the rate of interest being the same?

Correct Answer: Rs.10.40

Explanation:

Simple Interest on Rs. (260-20) for a gven time= Rs.20 


Simple Interest on Rs. (260-20) for a half time  = Rs.10 


True Discount on Rs.250 = Rs.10  


True Discount on Rs.260 = Rs.[(10/250) x 260] = Rs. 10.40


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