If x > 0, x/25 + x/20 is what percent of x?  Choose one
A) 5%	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.)   100/25 + 100/20= 4+5= 
<gadget id="calculator">4+5</gadget>
<output>9</output>
9   9 is 9% of 100=5%.
<result>A</result>
If x > 0, x/25 + x/20 is what percent of x?