Mahesh marks an article 15% above the cost price of Rs. 540. What must be his discount percentage if he sells it at Rs. 457?
Choices: A) 26.4% B) 21% C) 20% D) 19% E) None of these
CP = Rs. 540, MP = 540 + 15% of 540 = Rs. 621   SP = Rs. 457, Discount = 621 - 457= 
<gadget id="calculator">621 - 457</gadget>
<output>164</output>
164   Discount %= 164/621 * 100 = 26.4%   26.4%NSWER:26.4%
<result>A</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. 457?