document.write( "Question 905723: A tank contains 10L of 25% solution of alcohol. How much must be taken from the tank to be replaced by a 5% solution of alcohol so that the vessel will now contain a 10% solution of alcohol? \n" ); document.write( "
Algebra.Com's Answer #549352 by lwsshak3(11628)\"\" \"About 
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A tank contains 10L of 25% solution of alcohol. How much must be taken from the tank to be replaced by a 5% solution of alcohol so that the vessel will now contain a 10% solution of alcohol?
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\n" ); document.write( "let x=amt of 25% solution to be taken out and replaced by a 5% solution.
\n" ); document.write( "25%(10-x)+5%x=10%*10
\n" ); document.write( "2.5-.25x+.05x=1
\n" ); document.write( ".20x=1.5
\n" ); document.write( "x=7.5
\n" ); document.write( "amt of 25% solution to be taken out and replaced by a 5% solution. 7.5L
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