If x > 0, x/40 + x/20 is what percent of x?	Choose the correct choice from the following answers:  A) 6%  B) 25%  C) 37 1/2%  D) 60%  E) 75 %
Just plug and chug. Since the question asks for percents, pick 100. (but any number will do.)   100/40 + 100/20= 2.5+5= 
<gadget id="calculator">2.5+5</gadget>
<output>7.5</output>
7.5   7.5 is 75% of 100=75 %
<result>E</result>
If x > 0, x/40 + x/20 is what percent of x?