document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1204301>Question 1204301</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How much pure acid should be mixed with 4 gallons of a 60%  acid solution in order to get  80% acid​ solution? </SPAN>\n" );
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document.write( "How much pure acid should be mixed with 4 gallons of a 60%  acid solution in order to get  80% acid​ solution?\r<BR>\n" );
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document.write( "Pure acid 100%<BR>\n" );
document.write( "Let quantity to be added be x gallons to get 80% acid\r<BR>\n" );
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document.write( "available acid 60%  4 gallons\r<BR>\n" );
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document.write( "Required 80% acid . Volume after mixing will be (4+x) gallons\r<BR>\n" );
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document.write( "100*x+60*4= (x+4) *80\r<BR>\n" );
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document.write( "100x+240 = 80x+320\r<BR>\n" );
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document.write( "20x = 80\r<BR>\n" );
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document.write( "x=4 \r<BR>\n" );
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document.write( " mix 4 gallons of pure acid with the 4 gallons of the 60% acid solution to get  80% acid solution.<BR>\n" );
document.write( " </SPAN>\n" );
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