document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1021681>Question 1021681</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How much of an alloy that is 30% copper should be mixed with 400 ounces of an alloy that is 90% copper in order to get an alloy that is 70%? </SPAN>\n" );
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document.write( "T=amount of 30% alloy<BR>\n" );
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document.write( "0.30T+0.90(400)=0.70(T+400)<BR>\n" );
document.write( "0.30T+360=0.70T+280<BR>\n" );
document.write( "80=0.40T<BR>\n" );
document.write( "200=T<BR>\n" );
document.write( ".<BR>\n" );
document.write( "ANSWER: 200 ounces of 30% alloy should be used.<BR>\n" );
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document.write( " </SPAN>\n" );
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