document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1091242>Question 1091242</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Christopher ran m miles at r miles per hour and arrived on time. Then the distance was increased 7 miles. How fast did he have to run to travel the new distance in the same amount of time? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #705646 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=705646\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Christopher ran m miles at r miles per hour and arrived on time.<BR>\n" );
document.write( "time = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%2Fr ALIGN=MIDDLE  ALT=\"m%2Fr\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " Then the distance was increased 7 miles.<BR>\n" );
document.write( "(m+7)<BR>\n" );
document.write( " How fast did he have to run to travel the new distance in the same amount of time?<BR>\n" );
document.write( "let s = the increase in speed required to do this <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28m%2B7%29%29%2F%28%28r%2Bs%29%29 ALIGN=MIDDLE  ALT=\"%28%28m%2B7%29%29%2F%28%28r%2Bs%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%2Fr ALIGN=MIDDLE  ALT=\"m%2Fr\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "cross multiply<BR>\n" );
document.write( "m(r+s) = r(m+7)<BR>\n" );
document.write( "distribute<BR>\n" );
document.write( "mr + ms = mr + 7r<BR>\n" );
document.write( "subtract mr from both sides<BR>\n" );
document.write( "ms = 7r<BR>\n" );
document.write( "s = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%287r%29%2Fm ALIGN=MIDDLE  ALT=\"%287r%29%2Fm\"   DISABLED_style= \"max-width:90%; height:auto;\" > mph the increase in speed<BR>\n" );
document.write( "\"How fast to run to travel the new distance in the same amount of time?  <BR>\n" );
document.write( "r + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%287r%29%2Fm ALIGN=MIDDLE  ALT=\"%287r%29%2Fm\"   DISABLED_style= \"max-width:90%; height:auto;\" > mph is the required speed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );