document.write( "Question 998265: How many cubic centimeters of pure hydrochloric acid should be added to 20 cubic centimeters of a 30% solution of hydrochloric acid to obtain a 50% solution? \n" ); document.write( "
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How many cubic centimeters of pure hydrochloric acid should be added to 20 cubic centimeters of a 30% solution of hydrochloric acid to obtain a 50% solution?
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\n" ); document.write( "Add x cc's
\n" ); document.write( "x*100 + 20*30 = (x+20)*50
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