A single discount equal to a discount series of 10% and 20% is  Choose the correct choice
A) 25%
B) 28%
C) 30%
D) 35%
E) None of these
Equivalent discount = 10 + 20 - 10×20/100   = 30 – 2 = 28%   Answer 28%
<result>B</result>
A single discount equal to a discount series of 10% and 20% is