Mahesh marks an article 15% above the cost price of Rs. 540. What must be his discount percentage if he sells it at Rs. 456?	Pick one.
A) 18%  B) 26.57%  C) 20%  D) 19%  E) None of these
CP = Rs. 540, MP = 540 + 15% of 540 = Rs. 621   SP = Rs. 456, Discount = 621 - 456= 
<gadget id="calculator">621 - 456</gadget>
<output>165</output>
165   Discount %= 165/621 * 100 = 26.57%   ANSWER:26.57%
<result>B</result>
Mahesh marks an article 15% above the cost price of Rs. 540. What must be his discount percentage if he sells it at Rs. 456?