document.write( "Question 795639: how much of a 30% salt solution must be mixed with 70 gallons of a 12% salt solution to obtain a solution that is 20% of salt? \n" ); document.write( "
Algebra.Com's Answer #481121 by tommyt3rd(5050)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "0.3x+70*0.12=(x+70)*0.2\r
\n" ); document.write( "\n" ); document.write( "which gives us x=56
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