document.write( "Question 896523: Traveling downstream a certain boat went 17 km/h. Traveling upstream it only went 5 km/h. What is the speed of the current? How fast would the boat go if there were no current? \n" ); document.write( "
Algebra.Com's Answer #543655 by ankor@dixie-net.com(22740)\"\" \"About 
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Traveling downstream a certain boat went 17 km/h.
\n" ); document.write( " Traveling upstream it only went 5 km/h.
\n" ); document.write( " What is the speed of the current?
\n" ); document.write( " How fast would the boat go if there were no current?
\n" ); document.write( ":
\n" ); document.write( "let s = the boat speed in still water
\n" ); document.write( "let c = the rate of the current
\n" ); document.write( "then a simple equation for each way
\n" ); document.write( "s + c = 17
\n" ); document.write( "s - c = 5
\n" ); document.write( "-------------Adding eliminates c, find s
\n" ); document.write( "2s = 22
\n" ); document.write( "s = 22/2
\n" ); document.write( "s = 11 km/h in still water
\n" ); document.write( "then
\n" ); document.write( "11 + c = 17
\n" ); document.write( "c = 17 - 11
\n" ); document.write( "c = 6 km/h is the rate of the current
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check this in the 2nd equation
\n" ); document.write( "11 - 6 = 5 \n" ); document.write( "
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