document.write( "Question 311004: How much pure hydrocloric acid must be added to 40 milliliters of a 50% solution to obtain a 75% acid solution?
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Algebra.Com's Answer #222431 by Fombitz(32388) $\"\"$ $\"About$

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Let X be the ml of 100% acid added.
\n" ); document.write( " $\"50%2840%29%2B100%28X%29=75%2840%2BX%29\"$
\n" ); document.write( " $\"2000%2B100X=3000%2B75X\"$
\n" ); document.write( " $\"25X=1000\"$
\n" ); document.write( " $\"highlight%28X=40%29\"$
\n" ); document.write( "40 ml of 100% acid need to be added. \n" ); document.write( "

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