document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=470628>Question 470628</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The airplane could fly 2080 miles in 5 more hours than it took the sports car to drive 195 miles. The speed of the airplane was 4 times the speed of the sports car. Find the speeds and times of both </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #322865 by </B><A HREF=/tutors/aboutme.mpl?userid=monika_p><B>monika_p(71)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=monika_p><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=322865\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> for the airplane d=2080, t=t1+5, and v=4*v1<BR>\n" );
document.write( "for the car      d1=195, t1=? , and v1=?\r<BR>\n" );
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document.write( "speed formula <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=v=d%2Ft ALIGN=MIDDLE  ALT=\"v=d%2Ft\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "for the airplane we can write:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%2Av1=2080%2F%28t1%2B5%29 ALIGN=MIDDLE  ALT=\"4%2Av1=2080%2F%28t1%2B5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "for the car\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=v1=195%2Ft1 ALIGN=MIDDLE  ALT=\"v1=195%2Ft1\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "since the first equation for airplane has 2 unknown lets substitute v1 from 2nd equation\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%2A195%2Ft1=2080%2F%28t1%2B5%29 ALIGN=MIDDLE  ALT=\"4%2A195%2Ft1=2080%2F%28t1%2B5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=780%2Ft1-2080%2F%28t1%2B5%29=0 ALIGN=MIDDLE  ALT=\"780%2Ft1-2080%2F%28t1%2B5%29=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28780%28t1%2B5%29-2080t1%29%2Ft1%28t1%2B5%29=0 ALIGN=MIDDLE  ALT=\"%28780%28t1%2B5%29-2080t1%29%2Ft1%28t1%2B5%29=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=780t1%2B3900-2080t1=0 ALIGN=MIDDLE  ALT=\"780t1%2B3900-2080t1=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "1300t1=3900<BR>\n" );
document.write( "t1=3\r<BR>\n" );
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document.write( "then <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=v1=195%2F3=65 ALIGN=MIDDLE  ALT=\"v1=195%2F3=65\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "t=t1+5 = 8<BR>\n" );
document.write( "v=4*v1=4*65=260 </SPAN>\n" );
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