document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=66331>Question 66331</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/093979862x/algebrahomeworkh>An Incremental Development</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> The boat could travel 112 miles downstream in 4 hours but required 6 hours to travel 48 miles upstream. What was the speed of the boat in still water and what was the speed of the current? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #47042 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley71><B>checkley71(8403)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley71><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=47042\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+y=112/4 & x-y=48/6<BR>\n" );
document.write( "x+y=28 & x-y=8<BR>\n" );
document.write( "x=28-y<BR>\n" );
document.write( "(28-y)-y=8<BR>\n" );
document.write( "28-2y=8<BR>\n" );
document.write( "-2y=-20<BR>\n" );
document.write( "y=-20/-2<BR>\n" );
document.write( "y=10 this is the speed of the current<BR>\n" );
document.write( "x+10=28<BR>\n" );
document.write( "x=28-10<BR>\n" );
document.write( "x=18 the speed of the boat in still water.<BR>\n" );
document.write( "proof<BR>\n" );
document.write( "18-10=48/6<BR>\n" );
document.write( "8=8 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );