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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 to the end of double the time is

A.	Rs 20	B.	Rs 21.81
C.	Rs 22	D.	Rs 18.33

Answer and Explanation

Answer:Rs 18.33

Explanation:
SI on Rs (110 – 10) for a certain time = Rs 10
SI on Rs 100 for double the time = Rs 20
TD on Rs 120 = Rs (120 – 100) = Rs 20
TD on Rs 110 = Rs (20/120 * 110) = Rs 18.33

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