A certain car can travel 40 minutes on a gallon of gasoline at 60 miles per hour. If the car had started with a full tank and had 8 gallons of gasoline left in its tank at the end, then what percent of the tank was used to travel 120 miles at 60 mph? Choices
A) 15%
B) 20%
C) 25%
D) 27%
E) 40%
Total time for travelling 120 miles @ 60 mph = 120/60= 
<gadget id="calculator">120/60</gadget>
<output>2</output>
2 hour= 120 minutes.   Given, the car uses 1 gallon for every 40 minutes of driving @ 60 mph. Thus in 120 minutes it will use = 3 gallons. Thus, full tank = 3+8= 
<gadget id="calculator">3+8</gadget>
<output>11</output>
11 gallons ---&gt;3/11= 27% of the fuel used. 27% is the correct answer.
<result>D</result>
A certain car can travel 40 minutes on a gallon of gasoline at 60 miles per hour. If the car had started with a full tank and had 8 gallons of gasoline left in its tank at the end, then what percent of the tank was used to travel 120 miles at 60 mph?