SOLUTION: Kevin decides to mix grades of gasoline in his truck. He puts in 5 gallons of regular and 10 gallons of premium for a total cost of $61.30. If premium gasoline costs $0.22 more per

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Question 1053326: Kevin decides to mix grades of gasoline in his truck. He puts in 5 gallons of regular and 10 gallons of premium for a total cost of $61.30. If premium gasoline costs $0.22 more per gallon than regular, what was the price of each grade of gasoline?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
REGULAR r
PREMIUM r+0.22

5r%2B10%28r%2B0.22%29=61.3