document.write( "Question 414817: how many liters of a 3%saline solution must be added to an 8% saline solution to obtain 20 liters of a 6% saline solution \n" ); document.write( "
Algebra.Com's Answer #290925 by nerdybill(7384)\"\" \"About 
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how many liters of a 3%saline solution must be added to an 8% saline solution to obtain 20 liters of a 6% saline solution
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\n" ); document.write( "Let x = amount (liters) of 3% solution
\n" ); document.write( "then
\n" ); document.write( "20-x = amount (liters) of 8% solution
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\n" ); document.write( ".03x + .08(20-x) = .06(20)
\n" ); document.write( ".03x + 1.6 - .08x = 1.2
\n" ); document.write( "1.6 - .05x = 1.2
\n" ); document.write( "-.05x = -0.4
\n" ); document.write( "x = 8 liters (3% solution)
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\n" ); document.write( "Amount of 8% solution:
\n" ); document.write( "20-x = 20-8 = 12 liters
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