document.write( "Question 944413: A lumber company combined oak wood chips that cost $3.50 per pound with pine wood chips that costs $2.20 per pound. How many pounds of each were used to make a 100-pound mixture costing $2.72 per pound? \n" ); document.write( "

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A lumber company combined oak wood chips that cost $3.50 per pound with pine wood chips that costs $2.20 per pound. How many pounds of each were used to make a 100-pound mixture costing $2.72 per pound?
\n" ); document.write( "***
\n" ); document.write( "let x=amt of oak wood chips used
\n" ); document.write( "100-x=amt of pine wood chips used
\n" ); document.write( "..
\n" ); document.write( "3.50x+2.20(100-x)=2.72*100
\n" ); document.write( "3.50x+220-2.20x=272
\n" ); document.write( "1.30x=52
\n" ); document.write( "x=40
\n" ); document.write( "100-x=60
\n" ); document.write( "amt of oak wood chips used=40 lbs
\n" ); document.write( "amt of pine wood chips used=60 lbs \n" ); document.write( "

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