If Rs.10 be allowed as true discount on a bill of Rs.110 at the end of a certain time , then the discount allowed on the same sum due at the end of double the time is Pick:
A) 18.20	B) 18.33	C) 18	D) 18.3	E) None of these
Explanation:   Present worth = Amount - TrueDiscount   = 110 -10 = Rs.100   SI on Rs.100 for a certain time = Rs.10   SI on Rs.100 for doube the time = Rs.20   TrueDiscount on Rs.120 = 120 - 100 = Rs.20   TrueDiscount on Rs.110 = (110x 20/120) = Rs.18.33   Answer: 18.33
<result>B</result>
If Rs.10 be allowed as true discount on a bill of Rs.110 at the end of a certain time , then the discount allowed on the same sum due at the end of double the time is