document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=996069>Question 996069</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jim and his dad are bricklayers. Jim can lay bricks for a fireplace and chimney in 5 days. With his father's help he can build it in 2 days. How long would it take his father to build it alone? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #614665 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=614665\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Jim and his dad are bricklayers. Jim can lay bricks for a fireplace and chimney in 5 days. <BR>\n" );
document.write( "With his father's help he can build it in 2 days.<BR>\n" );
document.write( " How long would it take his father to build it alone? <BR>\n" );
document.write( ":<BR>\n" );
document.write( "let d = time required by Dad working alone<BR>\n" );
document.write( "let the completed job = 1<BR>\n" );
document.write( ":<BR>\n" );
document.write( "A typical \"shared work\" equation<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F5 ALIGN=MIDDLE  ALT=\"2%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2Fd ALIGN=MIDDLE  ALT=\"2%2Fd\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 1<BR>\n" );
document.write( "multiply equation by 5d<BR>\n" );
document.write( "5d*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F5 ALIGN=MIDDLE  ALT=\"2%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 5d*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2Fd ALIGN=MIDDLE  ALT=\"2%2Fd\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 5d*1<BR>\n" );
document.write( "Cancel the denominators and we have<BR>\n" );
document.write( "2d + 5(2) = 5d<BR>\n" );
document.write( "10 = 5d - 2d<BR>\n" );
document.write( "10 = 3d<BR>\n" );
document.write( "d = 10/3<BR>\n" );
document.write( "d = 3<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F3 ALIGN=MIDDLE  ALT=\"1%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > days, Dad alone </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );