document.write( "Question 616456: mament has 250 ml of salad dressing that is 40% oil and 60% vinegar. How much oil must he add so that the dressing is 50% oil and 50% vinegar? \n" ); document.write( "

Algebra.Com's Answer #387685 by josmiceli(19441) $\"\"$ $\"About$

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$\"+.4%2A250+=+100+\"$ ml of oil
\n" ); document.write( "Let $\"+x+\"$ = ml of oil to be added
\n" ); document.write( " $\"+%28+100+%2B+x+%29+%2F+%28+250+%2B+x+%29+=+.5+\"$
\n" ); document.write( " $\"+100+%2B+x+=+.5%2A%28+250+%2B+x+%29+\"$
\n" ); document.write( " $\"+100+%2B+x+=+125+%2B+.5x+\"$
\n" ); document.write( " $\"+.5x+=+125+-+100+\"$
\n" ); document.write( " $\"+.5x+=+25+\"$
\n" ); document.write( " $\"+x+=+50+\"$
\n" ); document.write( "50 ml of oil must be added \n" ); document.write( "

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