One hundred gallons of fuel are purchased at $0.70 per gallon. The fuel is consumed at a rate of $0.40 worth of fuel per hour. At this rate, how many hours are required to consume the 100 gallons of fuel? Select.
A) 150	B) 175	C) 200	D) 225	E) 250
The fuel is consumed at this rate: $0.40/$0.70 = 4/7 gallons per hour.   The time it takes to consume 100 gallons is:  100 / (4/7)= 
<gadget id="calculator"> 100 / (4/7)</gadget>
<output>175</output>
175 hours.   The answer is 175.
<result>B</result>
One hundred gallons of fuel are purchased at $0.70 per gallon. The fuel is consumed at a rate of $0.40 worth of fuel per hour. At this rate, how many hours are required to consume the 100 gallons of fuel?