Question 657020
 a girl lives 2.2 miles away from school. her car can travel 26 miles on 1 gallon of gas. the tank holds 16.9 gallons of gas. how much will it cost her to go to school if gas costs $3.45 per gallon?
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Each way, she uses 2.2 mi/(26 mi/gal) = 2.2/26 gallons
Multiply that by $3.45 to get the cost.
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The size of the tank is not relevant.