document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=221109>Question 221109</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This has been troubling me for some time now: How many gallons of an 8% acid solution and a 22% acid solution need to be mixed to make 14 gallons of a 13% acid solution? </SPAN>\n" );
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document.write( "14 gal of 13% = 1.82 gal of acid<BR>\n" );
document.write( "E + T = 14 (8% + 22%)<BR>\n" );
document.write( "E*0.08 + T*0.22 = 1.82 (acid in solution)<BR>\n" );
document.write( "8E + 22T = 182<BR>\n" );
document.write( "E + T = 14 -->T = 14-E<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "8E + 22(14-E) = 182<BR>\n" );
document.write( "8E + 308 - 22E = 182<BR>\n" );
document.write( "-14E = -126<BR>\n" );
document.write( "E = 9 gallons<BR>\n" );
document.write( "T = 5 gallons<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "If they're mixed in equal amounts, the % will be the average, = 15%<BR>\n" );
document.write( "Using more 8% will make the result less than 15%, as it does. </SPAN>\n" );
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