document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=398764>Question 398764</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what quantity x of a 65% acid solution must mix with a 20% solution to produce 300 mL of a 45% solution </SPAN>\n" );
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document.write( "Let x = amount (mL) of 65% solution<BR>\n" );
document.write( "then<BR>\n" );
document.write( "300-x = amount (mL) of 20% solution<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".65x + .20(300-x) = .45(300)<BR>\n" );
document.write( ".65x + 60-.20x = 135<BR>\n" );
document.write( ".45x + 60 = 135<BR>\n" );
document.write( ".45x = 75<BR>\n" );
document.write( "x = 166.67 mL (65% solution)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "amount of 20% solution:<BR>\n" );
document.write( "300-x = 300-166.67 = 133.33 mL <BR>\n" );
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