document.write( "Question 460875: A boat can go 20 miles against a current in the same time it can go 60 miles with the current. The speed of the current is 4 mph. Find the speed of the boat in still water. \n" ); document.write( "
Algebra.Com's Answer #316131 by rwm(914)\"\" \"About 
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t*(s-4)=20
\n" ); document.write( "60=t*(s+4)
\n" ); document.write( "t=5 s=8
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\n" ); document.write( "5*(8-4)=20
\n" ); document.write( "5*(8+4)=60
\n" ); document.write( "5*12=60
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