document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=399660>Question 399660</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This makes no sens what so ever... I am an 7th grader taking highschool math courses and this just stumped me. \r<BR>\n" );
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document.write( "Sarah and her brother, Jacob, worked hard weeding their neighbor’s garden. Together, they earned a total of $1040. Sarah earned $240 more than Jacob. How much did each of them earn?<BR>\n" );
document.write( "Write a system of two equations with two variables to model this problem.<BR>\n" );
document.write( "	Use substitution or the elimination method to solve the system.<BR>\n" );
document.write( "	Answer the question.<BR>\n" );
document.write( "	show how to check your answer.\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #283005 by </B><A HREF=/tutors/aboutme.mpl?userid=Tatiana_Stebko><B>Tatiana_Stebko(1539)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Tatiana_Stebko><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=Tatiana_Stebko><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=283005\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If Sarah earned $x, and Jacob earned $y, then together they earned x+y, we know that they earned $1040, so we have the first equation<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By=1040 ALIGN=MIDDLE  ALT=\"x%2By=1040\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Sarah earned $240 more than Jakob, so x-y=240 (second equation)<BR>\n" );
document.write( "The system of two equations with two variables to model this problem is<BR>\n" );
document.write( "x+y=1040<BR>\n" );
document.write( "x-y=240<BR>\n" );
document.write( "Let use the elimination method<BR>\n" );
document.write( "let add the first equation to the second<BR>\n" );
document.write( "x+y=1040<BR>\n" );
document.write( "(x-y)+(x+y)=240+1040<BR>\n" );
document.write( ".<BR>\n" );
document.write( "x+y=1040<BR>\n" );
document.write( "2x=1280, then <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=1280%2F2=640 ALIGN=MIDDLE  ALT=\"x=1280%2F2=640\"   DISABLED_style= \"max-width:90%; height:auto;\" >$ Sarah earned<BR>\n" );
document.write( "Let put x=640 in the first equation x+y=1040<BR>\n" );
document.write( "640+y=1040<BR>\n" );
document.write( "y=1040-640<BR>\n" );
document.write( "y=400 $ Jakob earned<BR>\n" );
document.write( "answer: x=640,y=400<BR>\n" );
document.write( "For check answer put x=640,y=400 in any equations of system<BR>\n" );
document.write( "x+y=1040, 640+400=1040, 1040=1040 (correct)<BR>\n" );
document.write( "x-y=240, 640-400=240, 240=240 (correct)<BR>\n" );
document.write( "Answer: Sarah earned $640; Jakob earned $400 </SPAN>\n" );
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