document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=735649>Question 735649</A>: <I><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "A tugboat goes 180 miles upstream in 10 hours. The return trip downstream takes 5 hours. Find the speed of the tugboat without a current and the speed of the current. </SPAN>\n" );
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document.write( "180=(R-C)10<BR>\n" );
document.write( "180=10R-10C DIVIDE BY 2 & ADD.<BR>\n" );
document.write( "180=(R+C)5<BR>\n" );
document.write( "180=5R+5C<BR>\n" );
document.write( "90=5R-5C<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "270=10R<BR>\n" );
document.write( "R=270/10<BR>\n" );
document.write( "R=27 MPH. ANS. FOR THE RATE OF THE BOAT.<BR>\n" );
document.write( "180=(27-C)10<BR>\n" );
document.write( "180=270-10C<BR>\n" );
document.write( "10C=270-180<BR>\n" );
document.write( "10C=90<BR>\n" );
document.write( "C=90/10<BR>\n" );
document.write( "C=9 MPH. ANS.FOR THE CURRENT.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( "180(27+9)5<BR>\n" );
document.write( "180=36*5<BR>\n" );
document.write( "180=180 </SPAN>\n" );
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