document.write( "Question 383423: suppose that x liters of 40% acid solution are mixed with y liters of a 42% solution to obtain 100l of a 41% solution. One equation in a system for solving this problem is x+y=100 which one of the following is the other equation? \n" ); document.write( "
Algebra.Com's Answer #271588 by Fombitz(32388)\"\" \"About 
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The other equation is the concentration equation.
\n" ); document.write( "\"40x%2B42y=41%28100%29\"
\n" ); document.write( "\"20x%2B21y=2050\"
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