document.write( "Question 823676: Liam is planning a three hour trip down the East River and back to his starting point. He knows that he can paddle in still water at 3 mi/h and that the rate of the current is 2 mi/h. How much time can he spend going downstream? How far downstream can he travel? \n" ); document.write( "
Algebra.Com's Answer #495695 by mananth(16946)\"\" \"About 
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let the distance distance downstream be x\r
\n" ); document.write( "\n" ); document.write( "upstream speed = 3-1=2 mph\r
\n" ); document.write( "\n" ); document.write( "downstream speed = 3+2 = 5 mph\r
\n" ); document.write( "\n" ); document.write( "time downstream + time upstream = 3\r
\n" ); document.write( "\n" ); document.write( "x/2 +x/5 =3\r
\n" ); document.write( "\n" ); document.write( "multiply by 10\r
\n" ); document.write( "\n" ); document.write( "5x+2x=30
\n" ); document.write( "7x=30\r
\n" ); document.write( "\n" ); document.write( "x= 30/7 = 4.3 miles\r
\n" ); document.write( "\n" ); document.write( "time down stream = 4.3/5
\n" ); document.write( "=0.86 hours
\n" ); document.write( "or 52 minutes
\n" ); document.write( "
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