1. 

The banker's discount on a certain sum due 2 years hence is 11/10 of the true discount.
The rate percent is:
A. 11%
B. 10%
C. 5%
D. 5.5%

Answer: Option C

Explanation:

Let T.D. be Re. 1.

Then, B.D. = Rs. 11 = Rs. 1.10.
10

Sum = Rs. 1.10 x 1 = Rs. 110
1.10 - 1 10

              = Rs. 11.

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

Rate = 100 x 1.10 % = 5%.
11 x 2