During a special promotion, a certain filling station is offering a 10 percent discount on gas purchased after the first 10 gallons. If Kim purchased 20 gallons of gas, and Isabella purchased 25 gallons of gas, then Isabella‟s total per-gallon discount is what percent of Kim‟s total per-gallon discount?  Choose the correct choice from the following choices:	A) 80%	B) 100%	C) 116.7%	D) 120%	E) 140%
Kim purchased 20 gallons of gas. She paid for   10 + 0.9*10= 
<gadget id="calculator">  10 + 0.9*10</gadget>
<output>19</output>
19 gallons, so the overall discount she got was 1/20= 5%.   Isabella purchased 25 gallons of gas. She paid for   10 + 0.9*15= 
<gadget id="calculator">  10 + 0.9*15</gadget>
<output>23.5</output>
23.5 gallons, so the overall discount she got was 1.5/25= 6%.   6 is  6/5*100= 
<gadget id="calculator"> 6/5*100</gadget>
<output>120</output>
120% of 5.   Answer: 120%.
<result>D</result>
During a special promotion, a certain filling station is offering a 10 percent discount on gas purchased after the first 10 gallons. If Kim purchased 20 gallons of gas, and Isabella purchased 25 gallons of gas, then Isabella‟s total per-gallon discount is what percent of Kim‟s total per-gallon discount?