document.write( "Question 280773: how much water should be added to 30gallons of a solution that is 70% antifreeze in order to get a mixture that is 60% antifreeze? thank you \n" ); document.write( "
Algebra.Com's Answer #204068 by Grinnell(63)\"\" \"About 
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30(.70)=(30+x).60
\n" ); document.write( "x is the amount of water added, in gallons.
\n" ); document.write( "30 +x is the final amount of solution, in gallons.
\n" ); document.write( "Again we multiply by 100, removing the decimal.
\n" ); document.write( "2100=1800+60x
\n" ); document.write( "300=60x
\n" ); document.write( "5=x so 5 gallons should be added.
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