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This question belongs to Arithmetic Ability True Discount
True Discount
?

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?

Answer & Solution
Correct Answer: Option B
S.I. on Rs. (260 - 20) for a given time = Rs. 20
S.I. on Rs. 240 for half time = Rs. 10
T.D. on Rs. 250 = Rs. 10
∴ T.D. on Rs. 260
= Rs. $$\frac{10}{250}$$  × 260
= Rs. 10.40
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