Graven spent $55.20 on gasoline to fill her 15 gallon tank at another gas station project spent $72.80 of gasoline to fill her 20 gallon tank. who paid less per gallon of gasoline explain your reasoning

You must find the unit cost in dollars per gallon for each purchase by dividing the cost by the number of gallons.

Graven: $55.20 for 15 gallons

$55.20 / (15 gal) = $3.68/gal

Project: $72.80 for 20 gallons

$72.80 / (20 gal) = $3.64/gal

Answer: Project paid less per gallon.