document.write( "Question 913146: A local specialty coffee shop wants to obtain 30 pounds of a mixture of coffee beans costing $4.40 per pound. They have a mixture costing $4.25 per pound and a mixture costing $4.50 per pound. How much of each should be used? (Use system of linear equations to solve the problem) \n" ); document.write( "
Algebra.Com's Answer #554336 by mananth(16946)![]() ![]() You can put this solution on YOUR website! Coffee \n" ); document.write( " price ---------------- quantity \n" ); document.write( "Mixture type I 4.25 ---------------- x pounds \n" ); document.write( "Mixture Type II 4.50 ------ 30 - x pounds \n" ); document.write( "Mixture 4.40 ---------------- 30 \n" ); document.write( "Total 30 pounds \n" ); document.write( "4.25 x + 4.5 ( 30 - x ) = 132 \n" ); document.write( "4.25 x + 135 - 4.5 x = 132 \n" ); document.write( "4.25 x - 4.5 x = 132 - 135 \n" ); document.write( "-0.25 x = -3 \n" ); document.write( "/ -0.25 \n" ); document.write( " x = 12 pounds $4.25 Mixture type I \n" ); document.write( " 18 pounds $4.50 Mixture Type II \n" ); document.write( " \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " \n" ); document.write( " |