document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=219621>Question 219621</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am very lost with this problem. Here it is: Arnie Waldman has chosen a workout that combines weight training and aerobics. If he does 30 min of weight training, followed by a 30-min aerobics class, he will burn a total of 374 calories. If he burns 12/5 as many calories doing aerobis as doing weight traing, how many calories will he burn in each activity? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #165181 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=165181\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If he does 30 min of weight training, followed by a 30-min aerobics class,<BR>\n" );
document.write( " he will burn a total of 374 calories. <BR>\n" );
document.write( "If he burns 12/5 as many calories doing aerobics as doing weight training,<BR>\n" );
document.write( " how many calories will he burn in each activity?<BR>\n" );
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document.write( "Let w = calories burned with weight<BR>\n" );
document.write( "Let a = calories burned with aerobics<BR>\n" );
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document.write( "Total cal equation<BR>\n" );
document.write( "w + a = 374<BR>\n" );
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document.write( "\"he burns 12/5 as many calories doing aerobics as doing weight training,\"<BR>\n" );
document.write( "a = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12%2F5 ALIGN=MIDDLE  ALT=\"12%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" >*w<BR>\n" );
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document.write( "Substitute <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12%2F5 ALIGN=MIDDLE  ALT=\"12%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" >w for a in the total cal equation<BR>\n" );
document.write( "w + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12%2F5 ALIGN=MIDDLE  ALT=\"12%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" >w = 374<BR>\n" );
document.write( "Multiply equation by 5, <BR>\n" );
document.write( "5w + 12w = 5(374)<BR>\n" );
document.write( "17w = 1870<BR>\n" );
document.write( "w = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1870%2F17 ALIGN=MIDDLE  ALT=\"1870%2F17\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "w = 110 cal doing weights<BR>\n" );
document.write( "then<BR>\n" );
document.write( "a = 374 - 110<BR>\n" );
document.write( "a = 264 cal doing aerobics <BR>\n" );
document.write( ";<BR>\n" );
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document.write( "Check solution, does 264/110 = 12/5?   both = 2.4 </SPAN>\n" );
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