document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1081579>Question 1081579</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A submarine left the Azores and traveled<BR>\n" );
document.write( "west. Three hours later an aircraft carrier<BR>\n" );
document.write( "left traveling 3 mph faster in an effort to<BR>\n" );
document.write( "catch up to it. After seven hours the aircraft<BR>\n" );
document.write( "carrier finally caught up. Find the<BR>\n" );
document.write( "submarine's average speed. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #695643 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=695643\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  A submarine left the Azores and traveled west. <BR>\n" );
document.write( " Three hours later an aircraft carrier left traveling 3 mph faster in an effort to  catch up to it.<BR>\n" );
document.write( " After seven hours the aircraft, carrier finally caught up.<BR>\n" );
document.write( " Find the submarine's average speed.<BR>\n" );
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document.write( "From the information given, we know<BR>\n" );
document.write( "Sub travel time = 10 hrs<BR>\n" );
document.write( "Car travel time = 7 hr<BR>\n" );
document.write( ";<BR>\n" );
document.write( "let s = sub speed<BR>\n" );
document.write( "then<BR>\n" );
document.write( "(s+3) = car speed<BR>\n" );
document.write( ":<BR>\n" );
document.write( "When carrier catches the sub, they each will have traveled the same distance<BR>\n" );
document.write( "Write a distance equation; dist = time * speed<BR>\n" );
document.write( "10s = 7(s+3)<BR>\n" );
document.write( "10s = 7s + 21<BR>\n" );
document.write( "10s - 7s = 21<BR>\n" );
document.write( " 3s = 21<BR>\n" );
document.write( " s = 21/3<BR>\n" );
document.write( " s = 7 mph is the speed of the sub<BR>\n" );
document.write( ":<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Check this, find the dist of each<BR>\n" );
document.write( "10*7 = 70 mi<BR>\n" );
document.write( "7(7+3) = 70 mi<BR>\n" );
document.write( "   </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );