document.write( "Question 623022: A boat is traveling in a river at a speed of 9 miles per hour. The river has a current of 7 miles per hour. If the boat's destination is a dock located 5 miles upstream, what will be the total trip time for the boat?
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Algebra.Com's Answer #391790 by ankor@dixie-net.com(22740)\"\" \"About 
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A boat is traveling in a river at a speed of 9 miles per hour.
\n" ); document.write( " The river has a current of 7 miles per hour.
\n" ); document.write( "If the boat's destination is a dock located 5 miles upstream, what will be the total trip time for the boat?
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\n" ); document.write( "The effective speed of the boat will be 9-7 = 2 mph
\n" ); document.write( "time = 5/2 = 2.5 hrs
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