Question 981611
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If the sub compact car averages a speed of 40 miles per hour in the city, after how many hours of city driving will its fuel tank be empty?
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(320 miles)/(40 miles/hr)=8 hours
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The sub compact car has a city driving range of ___  miles on a full tank of gas. 
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Quote from given question: "A sub-compact car has a 10 gallon fuel tank and has a range of 320 miles for city driving".  The size of the fuel tank does not matter: city driving range is given as 320 miles.(The range is the distance a car can be driven on a full tank of gas.)