document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=698228>Question 698228</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mark and Verna are saving to buy their mother a ring for her birthday. The ring costs @126.75. Mark delivers pizza making $8.50 per hour. Verna baby sits and makes $10 per hour. How many hours will Mark and Verna each need to work in order to pay for the ring for their mother? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #430573 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=430573\">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=+a+ ALIGN=MIDDLE  ALT=\"+a+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = hrs Mark worked<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+ ALIGN=MIDDLE  ALT=\"+b+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = hrs Verna worked<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+8.5a+%2B+10b+=+126.75+ ALIGN=MIDDLE  ALT=\"+8.5a+%2B+10b+=+126.75+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "There are 2 unknowns and only 1 equation, so<BR>\n" );
document.write( "it's not directly solvable, but an extra clue is that<BR>\n" );
document.write( "the <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+8.5+ ALIGN=MIDDLE  ALT=\"+8.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" > must get multiplied by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1.5+ ALIGN=MIDDLE  ALT=\"+1.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3.5+ ALIGN=MIDDLE  ALT=\"+3.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+5.5+ ALIGN=MIDDLE  ALT=\"+5.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" >, etc up to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+13.5+ ALIGN=MIDDLE  ALT=\"+13.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Suppose Mark works <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+13.5+ ALIGN=MIDDLE  ALT=\"+13.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+8.5%2A13.5+=++114.75+ ALIGN=MIDDLE  ALT=\"+8.5%2A13.5+=++114.75+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+126.75+-+114.75+=+12+ ALIGN=MIDDLE  ALT=\"+126.75+-+114.75+=+12+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "If he works <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+11.5+ ALIGN=MIDDLE  ALT=\"+11.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+8.5%2A11.5+=+97.75+ ALIGN=MIDDLE  ALT=\"+8.5%2A11.5+=+97.75+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+126.75+-+97.75+=+29+ ALIGN=MIDDLE  ALT=\"+126.75+-+97.75+=+29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "If he works <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+9.5+ ALIGN=MIDDLE  ALT=\"+9.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+8.5%2A9.5+=+80.75+ ALIGN=MIDDLE  ALT=\"+8.5%2A9.5+=+80.75+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+126.75+-+80.75+=+46+ ALIGN=MIDDLE  ALT=\"+126.75+-+80.75+=+46+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "If he works <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+5.5+ ALIGN=MIDDLE  ALT=\"+5.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+8.5%2A5.5+=+46.75+ ALIGN=MIDDLE  ALT=\"+8.5%2A5.5+=+46.75+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+126.75+-+46.75+=+80+ ALIGN=MIDDLE  ALT=\"+126.75+-+46.75+=+80+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "This works<BR>\n" );
document.write( "Mark works 5.5 hrs and Verna works 8 hrs<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+8.5%2A5.5+%2B+10%2A8+=+46.75+%2B+80+ ALIGN=MIDDLE  ALT=\"+8.5%2A5.5+%2B+10%2A8+=+46.75+%2B+80+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+46.75+%2B+80+=+126.75+ ALIGN=MIDDLE  ALT=\"+46.75+%2B+80+=+126.75+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );