document.write( "Question 380379: How many gallons of 50% antifreeze solution must be mixed with 100 gallons of 20% antifreeze solution to get 40% antifreeze solution? \n" ); document.write( "

Algebra.Com's Answer #270057 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let A be the amount of 50% solution.
\n" ); document.write( " $\"50A%2B20%28100%29=40%28A%2B100%29\"$
\n" ); document.write( " $\"5A%2B200=4A%2B400\"$
\n" ); document.write( " $\"highlight%28A=200%29\"$ gallons
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