document.write( "Question 897886: A chemist needs 10 liters of a 50% salt solution. all she has available is a 20% salt solution and a 70% salt solution. how much of each of the two solutions should she mix to obtain her desired solution? \n" ); document.write( "
Algebra.Com's Answer #544409 by nerdybill(7384)\"\" \"About 
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A chemist needs 10 liters of a 50% salt solution. all she has available is a 20% salt solution and a 70% salt solution. how much of each of the two solutions should she mix to obtain her desired solution?
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\n" ); document.write( "Let x = amount (liters) of 70%
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\n" ); document.write( "10-x = amount (liters) of 20%
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\n" ); document.write( ".70x + .20(10-x) = .50(10)
\n" ); document.write( ".70x + 2-.20x = 5
\n" ); document.write( ".50x + 2 = 5
\n" ); document.write( ".50x = 3
\n" ); document.write( "x = 6 liters (70%)
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\n" ); document.write( "amount of 20%:
\n" ); document.write( "10-x = 10-6 = 4 liters
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