A trader marked the selling price of an article at 11% above the cost price. At the time of selling, he allows certain discount and suffers a loss of 1%. He allowed a discount of :
Choose the correct choice:
A) 10 % B) 10.5 % C) 9.9% D) 12.5 % E) None
Sol.   Let C.P. = Rs. 100. Then, Marked Price = Rs. 110, S.P. = Rs. 99.   ∴ Discount % = [11/111 * 100] % = 9.9%   Answer 9.9%
<result>C</result>
A trader marked the selling price of an article at 11% above the cost price. At the time of selling, he allows certain discount and suffers a loss of 1%. He allowed a discount of :