SOLUTION: George decides to mix grades of gasoline in his truck. He puts in 8 gallons of regular and 12 gallons of premium for a total cost of $55.80. If premium gasoline costs $0.15 more p

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: George decides to mix grades of gasoline in his truck. He puts in 8 gallons of regular and 12 gallons of premium for a total cost of $55.80. If premium gasoline costs $0.15 more p      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 545682: George decides to mix grades of gasoline in his truck. He puts in 8 gallons of regular and 12 gallons of premium for a total cost of $55.80. If premium gasoline costs $0.15 more per gallon than regular, what was the price of each grade of gasoline.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
George decides to mix grades of gasoline in his truck. He puts in 8 gallons of regular and 12 gallons of premium for a total cost of $55.80. If premium gasoline costs $0.15 more per gallon than regular, what was the price of each grade of gasoline.
---------------------
8*p + 12*(p+15) = 5580
20p = 5400
p = $2.70/gallon of Reg
--> $2.85/gallon of premium