A single discount equivalent to successive discount of 20%, 10% is	Choose the correct choice
A) 72%	B) 28%	C) 32%	D) 76%	E) 78%
Explanation:   (80 * 90)/100 = Rs. 72/-   Discount = 28 %   Answer: Option 28%
<result>B</result>
A single discount equivalent to successive discount of 20%, 10% is