document.write( "Question 172267: How many liters of a 20% salt solution must be added to 42 L of a 38% salt solution to get a 28% salt solution? \n" ); document.write( "

Algebra.Com's Answer #127253 by Mathtut(3670) $\"\"$ $\"About$

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let x be the amount of 20% solution
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\n" ); document.write( ".2x+.38(42)=.28(x+42)
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\n" ); document.write( ".2x+15.96=.28x+11.76
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\n" ); document.write( ".08x=4.2
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\n" ); document.write( " $\"highlight%28x=52.5%29\"$ liters of 20% solution \n" ); document.write( "

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