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)![]() ![]() ![]() You can put this solution on YOUR website! 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 \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x=liters of 77% \n" ); document.write( "30-x=liters of 67% \n" ); document.write( "coefficient=percent\r \n" ); document.write( " \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 \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Distribute \n" ); document.write( "77x+2010-67x=2220\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Combine like terms \n" ); document.write( "10x+2010=2220\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtract 2010 from both sides \n" ); document.write( "10x=210\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Divide by 10 \n" ); document.write( "x=21\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x=liters of 77% \n" ); document.write( "30-x=liters of 67%\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Answer: \n" ); document.write( "liters of 77%=21 \n" ); document.write( "liters of 67%=9 \n" ); document.write( " |