Rs.20 is the true discount on Rs. 260 due after a certain time. What will be the true discount on the same sum due after half of the former time, the rate of interest being the same?	Choose the correct choice from the following choices: A) 10.4 B) 11 C) 14.8 D) 15.4 E) none
Sol.   S.I. on Rs. (260 - 20) for a given time = Rs. 20.   S.I. on Rs. 240 for half the time = Rs. 10.   T.D. on Rs. 250 = Rs. 10.   ∴ T.D. on Rs. 260 = Rs. [10/250 * 260] = Rs. 10.40   10.4nswer 10.4
<result>A</result>
Rs.20 is the true discount on Rs. 260 due after a certain time. What will be the true discount on the same sum due after half of the former time, the rate of interest being the same?