document.write( "Question 26884: The Hudson River flows at a rate of 3 miles per hour. A patrol boat travels 60 miles upriver, and returns in a total time of 9 hours. What is the speed of the boat in still water?\r
\n" ); document.write( "\n" ); document.write( "Can you please help me?! This is due soon and I've been racking my brain at it and still can't get it.....
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Algebra.Com's Answer #14645 by Paul(988)\"\" \"About 
You can put this solution on YOUR website!
Since its total time of 9 hours you knwo that its first speed + the second.
\n" ); document.write( "\"60%2F%28x%2B3%29-60%2F%28x-3%29=9\"
\n" ); document.write( "60[(x+3)+(x-3)]=9[(x+3)(x-3)]
\n" ); document.write( "\"60%282x%29=9%28x%5E2-9%29\"
\n" ); document.write( "\"120x=9x%5E2-81\"
\n" ); document.write( "\"9x%5E2-120x-81=0%2Cx\"
\n" ); document.write( "Use the quadratic formula and simplfy you get
\n" ); document.write( "x=13.9777...
\n" ); document.write( "Round it out
\n" ); document.write( "Hence, the speed of the boat is 14mph in still water.
\n" ); document.write( "Paul.
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