5.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 at the end of double the time is:
A. Rs. 20
B. Rs. 21.81
C. Rs. 22
D. Rs. 18.33
Answer:
Option:D
S.I. on Rs. (110 - 10) for a certain time = Rs. 10.
S.I. on Rs. 100 for double the time = Rs. 20.
T.D. on Rs. 120 = Rs. (120 - 100) = Rs. 20.
T.D. on Rs. 110
|
= Rs.
|
|
20
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x 110
|
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= Rs. 18.33
|
120
|
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