document.write( "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 . \n" ); document.write( "
Algebra.Com's Answer #587544 by josgarithmetic(39617)\"\" \"About 
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r for REGULAR unleaded, p for premium unleaded, dollars per gallon
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