document.write( "Question 150522: a plant manager needs a solution of 77% herbicide to be mixed with a solution of 67% herbicide to form 30 liters of 74% solution. How many liters of the 77% solution must he use? \n" ); document.write( "
Algebra.Com's Answer #110483 by mangopeeler07(462)\"\" \"About 
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a plant manager needs a solution of 77% herbicide to be mixed with a solution of 67% herbicide to form 30 liters of 74% solution. How many liters of the 77% solution must he use?\r
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\n" ); document.write( "\n" ); document.write( "x=liters of 77%
\n" ); document.write( "30-x=liters of 67%
\n" ); document.write( "coefficient=percent\r
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\n" ); document.write( "\n" ); document.write( "77x+67(30-x)=74(30)------------------------solution of 77% herbicide mixed with a solution of 67% herbicide = 30 liters of 74% solution. \r
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\n" ); document.write( "\n" ); document.write( "Distribute
\n" ); document.write( "77x+2010-67x=2220\r
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\n" ); document.write( "\n" ); document.write( "Combine like terms
\n" ); document.write( "10x+2010=2220\r
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\n" ); document.write( "\n" ); document.write( "Subtract 2010 from both sides
\n" ); document.write( "10x=210\r
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\n" ); document.write( "\n" ); document.write( "Divide by 10
\n" ); document.write( "x=21\r
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\n" ); document.write( "\n" ); document.write( "x=liters of 77%
\n" ); document.write( "30-x=liters of 67%\r
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\n" ); document.write( "\n" ); document.write( "Answer:
\n" ); document.write( "liters of 77%=21
\n" ); document.write( "liters of 67%=9
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