document.write( "Question 286109: The owner of a tea shop wants to mix three kinds of tea to make 100oz of a mixture that will sell for $0.83 per oz. He uses Orange Pekoe, which sells for $0.80 per oz, Irish Breakfast, for $0.85 per oz, and Earl Grey which sells for $0.95 per oz. If he wants to use twice as much Orang Pekoe as Irish Breakfast, how much of each kind of tea should be used? \n" ); document.write( "
Algebra.Com's Answer #207486 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! The owner of a tea shop wants to mix three kinds of tea to make 100oz of a \n" ); document.write( " mixture that will sell for $0.83 per oz. \n" ); document.write( " He uses Orange Pekoe, which sells for $0.80 per oz, Irish Breakfast, for $0.85 \n" ); document.write( " per oz, and Earl Grey which sells for $0.95 per oz. \n" ); document.write( "If he wants to use twice as much Orange Pekoe as Irish Breakfast, how much of \n" ); document.write( "each kind of tea should be used? \n" ); document.write( ": \n" ); document.write( "Let x = amt of Irish breakfast tea required \n" ); document.write( "It says,\"use twice as much Orange Pekoe as Irish Breakfast\", therefore: \n" ); document.write( "2x = amt of Orange Pekoe Tea \n" ); document.write( ": \n" ); document.write( "Let y = amt of Earl Grey \n" ); document.write( ": \n" ); document.write( "Amt of tea equation \n" ); document.write( "x + 2x + y = 100 oz \n" ); document.write( "3x + y = 100 \n" ); document.write( "y = (100-3x) \n" ); document.write( ": \n" ); document.write( "Cost of tea equation \n" ); document.write( ".85x + .80(2x) + .95y = .83(100) \n" ); document.write( ".85x + 1.60x + .95y = 83 \n" ); document.write( "2.45x + .95y = 83 \n" ); document.write( ": \n" ); document.write( "Replace y with (100-3x) \n" ); document.write( "2.45x + .95(100-3x) = 83 \n" ); document.write( "2.45x + 95 - 2.85x = 83 \n" ); document.write( "2.45x - 2.85x = 83 - 95 \n" ); document.write( "-.40x = -12 \n" ); document.write( "x = \n" ); document.write( "x = 30 oz of Irish Tea required \n" ); document.write( "then \n" ); document.write( "2(30) = 60 oz of Orange Pekoe \n" ); document.write( "and \n" ); document.write( "y = 100 - 90 \n" ); document.write( "y = 10 oz of Earl Grey \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check solution in cost equation \n" ); document.write( ".85(30) + .80(60) + .95(10) = .83(100) \n" ); document.write( "25.5 + 48.0 + 9.5 = 83 \n" ); document.write( " \n" ); document.write( " |