SOLUTION: twelve gallons of regular unleaded gasoline plus 8 gallons of premium unleaded gasoline cost $50.86 . Premium unleaded gasoline costs $0.11 more per gallon than regular unleaded .

Question 961556: twelve gallons of regular unleaded gasoline plus 8 gallons of premium unleaded gasoline cost $50.86 . Premium unleaded gasoline costs $0.11 more per gallon than regular unleaded . Find the price per gallon for each grade of gasoline .
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
r for REGULAR unleaded, p for premium unleaded, dollars per gallon

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