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Q.
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
A.
18.20
B.
18.33
C.
18
D.
18.3
View Answer
Correct choice: B
Explanation:
Present worth = Amount - True Discount = 110 -10 = Rs.100 SI on Rs.100 for a certain time = Rs.10 SI on Rs.100 for doube the time = Rs.20 True Discount on Rs.120 = 120 - 100 = Rs.20 True Discount on Rs.110 = (110×20/120) = Rs.18.33
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