document.write( "Question 472377: How many litres of a 30% acid solution should be added to 20 litres of 60% acid solution in order to obtain a 50% acid solution?
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Algebra.Com's Answer #323942 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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How many litres of a 30% acid solution should be added to 20 litres of 60% acid solution in order to obtain a 50% acid solution?
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\n" ); document.write( "Let x = amt of 30% solution required
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\n" ); document.write( "Write a decimal equiv, mixture equation
\n" ); document.write( ".30x + .60(20) = .50(x+20)
\n" ); document.write( ".30x + 12 = .5x + 10
\n" ); document.write( "12 - 10 = .5x - .3x
\n" ); document.write( "2 = .2x
\n" ); document.write( "x = $\"2%2F.2\"$
\n" ); document.write( "x = 10 liters of 30% stuff required \n" ); document.write( "

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