document.write( "Question 157679: 320ml of 30% alcohol soln, convert this to 50% alcohol soln by adding 70% alcohol soln. \n" ); document.write( "

Algebra.Com's Answer #116186 by Fombitz(32388) $\"\"$ $\"About$

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Adding x ml of 70% solution, the balance equation becomes,
\n" ); document.write( " $\"50%28320%2Bx%29=30%28320%29%2B70%28x%29\"$
\n" ); document.write( "Solve for x.
\n" ); document.write( " $\"50%28320%2Bx%29=30%28320%29%2B70%28x%29\"$
\n" ); document.write( " $\"16000%2B50x=9600%2B70x\"$
\n" ); document.write( " $\"-20x=-6400\"$
\n" ); document.write( " $\"x=320\"$
\n" ); document.write( "Add 320 ml of 70% solution. \n" ); document.write( "

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