A single discount equivalent to the discount series of 25%, 20% and 15% is?	Options.
A) 31.8 B) 31.1 C) 31.6 D) 49 E) 31.9
Explanation:   100*(75/100)*(80/100)*(85/100)= 
<gadget id="calculator">100*(75/100)*(80/100)*(85/100)</gadget>
<output>51</output>
51   100 - 51= 
<gadget id="calculator">100 - 51</gadget>
<output>49</output>
49   Answer: 49
<result>D</result>
A single discount equivalent to the discount series of 25%, 20% and 15% is?