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Question

The bankers discount on a certain sum due 2 years hence is \(\frac{11}{10}\) of the true discount The rate percent is:

Options:
A .  11%
B .  10%
C .  5%
D .  5.5%
Answer: Option C

Let T.D. be Re. 1.


Then, B.D. = Rs. \(\frac{11}{10}\)  = Rs. 1.10


So, Sum = Rs. \(\left(\frac{1.10\times1}{1.10-1}\right) = Rs. \left(\frac{110}{10}\right) = Rs. 11.\)


So,  S.I. on Rs. 11 for 2 years is Rs. 1.10


So,  Rate =  \(\left(\frac{110\times1.10}{11\times2}\right)\)   %  = 5%


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