document.write( "Question 264399: How many liters of 100% pure acid should be added to 22 liters of a 30% acid solution to obtain a 45% acid solution? \n" ); document.write( "

Algebra.Com's Answer #194654 by drk(1908) $\"\"$ $\"About$

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This is a mixture problem. Here is a table based on the given information.
\n" ); document.write( "acids . . . . . . .% . . . . . . . . .L . . . . . . . . .#L
\n" ); document.write( "pure. . . . . . . 100. . . . . . . x. . . . . . . . .100x
\n" ); document.write( "30. . . . . . . . . 30 . . . . . . . 22. . . . . . . .660
\n" ); document.write( "mixture. . . . . 45 . . . . . . .22+x . . . . . .990 + 45x
\n" ); document.write( "looking at the third column, we get
\n" ); document.write( " $\"100x+%2B+660+=+990+%2B+45x\"$
\n" ); document.write( "subtract 660 and subtract 45x to get
\n" ); document.write( " $\"55x+=+330\"$
\n" ); document.write( "divide to get
\n" ); document.write( " $\"x+=+6\"$ liters \n" ); document.write( "

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