document.write( "Question 279402: Translate the problem into a pair of linear equations in two variables. Solve the equations using either elimination or substitution. State your answer for the specified variable.\r
\n" ); document.write( "\n" ); document.write( "In a chemistry class, 5 liters of a 4%-saline solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
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Algebra.Com's Answer #203149 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
.04*5+.10*x=.06*(5+x)
\n" ); document.write( "or with two variables
\n" ); document.write( "5+x=y
\n" ); document.write( ".04*5+.10*x=.06*y
\n" ); document.write( "which is a waste of time
\n" ); document.write( "x=2.5
\n" ); document.write( "y=7.5
\n" ); document.write( "5+x=7.5\r
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