A single discount equivalent to the discount series of 20%, 12% and 5% is? Choose the correct answer.
A) 31.6 B) 31.0 C) 31.6 D) 33.12 E) 31.5
100*(80/100)*(88/100)*(95/100)   = 68.4   100 - 66.88= 
<gadget id="calculator">100 - 66.88</gadget>
<output>33.12</output>
33.12   Answer: 33.12
<result>D</result>
A single discount equivalent to the discount series of 20%, 12% and 5% is?