document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1013612>Question 1013612</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The number of cows on a farm increased by 60. Because of better food, the amount of milk from each cow went up from 12.8 liters per day to 15 liters per day on the average. How many cows are on the farm if the farmer gets 1340 liters of milk more per day? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #629876 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=629876\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+ ALIGN=MIDDLE  ALT=\"+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the number of cows originally<BR>\n" );
document.write( "on the farm<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+12.8n+ ALIGN=MIDDLE  ALT=\"+12.8n+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = liters of milk from <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+ ALIGN=MIDDLE  ALT=\"+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" > cows<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+%2B+60+ ALIGN=MIDDLE  ALT=\"+n+%2B+60+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = number of cows later on<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+15%2A%28+n+%2B+60+%29+ ALIGN=MIDDLE  ALT=\"+15%2A%28+n+%2B+60+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = liters of milk from <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+%2B+60+ ALIGN=MIDDLE  ALT=\"+n+%2B+60+\"   DISABLED_style= \"max-width:90%; height:auto;\" > cows<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+ ALIGN=MIDDLE  ALT=\"+m+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = liters of milk/day originally<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+%2B+1340+ ALIGN=MIDDLE  ALT=\"+m+%2B+1340+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = liters of milk later on<BR>\n" );
document.write( "----------------------------------<BR>\n" );
document.write( "Equation for case with <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+ ALIGN=MIDDLE  ALT=\"+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" > cows:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+=+12.8n+ ALIGN=MIDDLE  ALT=\"+m+=+12.8n+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Equation for case with <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+%2B+60+ ALIGN=MIDDLE  ALT=\"+n+%2B+60+\"   DISABLED_style= \"max-width:90%; height:auto;\" > cows<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+%2B+1340+=+15%2A%28+n+%2B+60+%29+ ALIGN=MIDDLE  ALT=\"+m+%2B+1340+=+15%2A%28+n+%2B+60+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "----------------------------------<BR>\n" );
document.write( "Substitute (1) into (2) <BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+12.8n+%2B+1340+=+15%2A%28+n+%2B+60+%29+ ALIGN=MIDDLE  ALT=\"+12.8n+%2B+1340+=+15%2A%28+n+%2B+60+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+12.8n+%2B+1340+=+15n+%2B+900+ ALIGN=MIDDLE  ALT=\"+12.8n+%2B+1340+=+15n+%2B+900+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+15n+-+12.8n+=+1340+-+900+ ALIGN=MIDDLE  ALT=\"+15n+-+12.8n+=+1340+-+900+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2.2n+=+440+ ALIGN=MIDDLE  ALT=\"+2.2n+=+440+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+=+200+ ALIGN=MIDDLE  ALT=\"+n+=+200+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+%2B+60+=+260+ ALIGN=MIDDLE  ALT=\"+n+%2B+60+=+260+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "There are 260 cows on the farm<BR>\n" );
document.write( "---------------------------<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+=+12.8n+ ALIGN=MIDDLE  ALT=\"+m+=+12.8n+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+=+12.8%2A200+ ALIGN=MIDDLE  ALT=\"+m+=+12.8%2A200+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+=+2560+ ALIGN=MIDDLE  ALT=\"+m+=+2560+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+%2B+1340+=+15%2A%28+n+%2B+60+%29+ ALIGN=MIDDLE  ALT=\"+m+%2B+1340+=+15%2A%28+n+%2B+60+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+%2B+1340+=+15%2A%28+200+%2B+60+%29+ ALIGN=MIDDLE  ALT=\"+m+%2B+1340+=+15%2A%28+200+%2B+60+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+%2B+1340+=+3900+ ALIGN=MIDDLE  ALT=\"+m+%2B+1340+=+3900+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+=+2560+ ALIGN=MIDDLE  ALT=\"+m+=+2560+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK<BR>\n" );
document.write( "  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );