document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=795391>Question 795391</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A ferry leaves a harbor and travels to a resort island at an average speed of 18 mph. On the return trip, the ferry travels at an average speed of 10 mph because of fog. The total time for the trip is 7 h. How far is the island from the harbor? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #480945 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=480945\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A ferry leaves a harbor and travels to a resort island at an average speed of 18 mph. On the return trip, the ferry travels at an average speed of 10 mph because of fog. The total time for the trip is 7 h. How far is the island from the harbor?<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "To island DATA:<BR>\n" );
document.write( "rate = 18 mph ; time = t hrs ; distance = 18t miles<BR>\n" );
document.write( "----------------------------------<BR>\n" );
document.write( "From island DATA:<BR>\n" );
document.write( "rate = 10 mph ; time = 7-t hrs ; distance = 10(7-t) miles<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "distance = distance<BR>\n" );
document.write( "18t = 10(7-t)<BR>\n" );
document.write( "18t = 70 - 10t<BR>\n" );
document.write( "28t = 70<BR>\n" );
document.write( "t = 35/14 hrs<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Ans: distance = 18t = 18(35/14) = 45 miles<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "=============== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );