document.write( "Question 811288: If 3 gallons of Grade A oil are mixed with 7 gal of grade B oil the resulting mixture is 43 cents/gal.However,if 3 gal of Grade A oil are mixed with 2 gal of Grade B oil the resulting mixture is worth 46 cent/gal.Find the price per gallon of each grade.\r
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Algebra.Com's Answer #488670 by richwmiller(17219)\"\" \"About 
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3a+7b=43*10,
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\n" ); document.write( "a = 50, b = 40
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