document.write( "Question 741162: Please help me solve this word problem. \r
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document.write( "Elise wants to make a 61% alcohol solution. She has already poured 3 gal. of a 40% alcohol solution into a beaker. How many gal. of a 70% alcohol solution must she add to this to create the desired mixture?\r
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document.write( "This is what I have tried.
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document.write( ".61x+1.2=.7x+2.1
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document.write( ".61x=.7x+1.1
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document.write( ".87x=1.1
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document.write( "x=1.26 gallons\r
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document.write( "Is this correct? \n" );
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Algebra.Com's Answer #451868 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Elise wants to make a 61% alcohol solution. She has already poured 3 gal. of a 40% alcohol solution into a beaker. How many gal. of a 70% alcohol solution must she add to this to create the desired mixture? \n" ); document.write( "------- \n" ); document.write( "Equation: \n" ); document.write( "alch + alch = alch \n" ); document.write( "0.40*3 + 0.70x = 0.61(3+x) \n" ); document.write( "-------- \n" ); document.write( "40*3 + 70x = 61*3 + 61x \n" ); document.write( "-------- \n" ); document.write( "9x = 21*3 \n" ); document.write( "----- \n" ); document.write( "x = 7 gallons (amt of 70% solution needed) \n" ); document.write( "================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |