document.write( "Question 231931: I have been working on this problem all night please help?\r
\n" ); document.write( "\n" ); document.write( "How many liters of a 20% salt solution must be mixed with 30 liters of an 60% salt solution to obtain a 30% salt solution? \n" ); document.write( "
Algebra.Com's Answer #171501 by ankor@dixie-net.com(22740)\"\" \"About 
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How many liters of a 20% salt solution must be mixed with 30 liters of an 60%
\n" ); document.write( " salt solution to obtain a 30% salt solution?
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\n" ); document.write( "Let x = amt of 20% solution required
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\n" ); document.write( "Write an amt of salt equation using the decimal equiv
\n" ); document.write( ".20x + .60(30) = .30(x+30)
\n" ); document.write( ".20x + 18 = .30x + 9
\n" ); document.write( "18 - 9 = .30x - .20x
\n" ); document.write( "9 = .10x
\n" ); document.write( "x = \"9%2F.1\"
\n" ); document.write( "x = 90 liters of 20% solution
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\n" ); document.write( "See if this is true
\n" ); document.write( ".2(90) + .6(30) = .3(90+30)
\n" ); document.write( "18 + 18 = .3(120); confirms our solutio \n" ); document.write( "
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