document.write( "Question 821131: A man rows a boat 500 feet upstream against a constant current in 10 minutes. He the rows 300 feet downstream (with the same current) in 5 minutes. Find the speed of the current and the equivalent rate at which he can row in still water. \n" ); document.write( "
Algebra.Com's Answer #493932 by TimothyLamb(4379)\"\" \"About 
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\n" ); document.write( "s = d / t
\n" ); document.write( "---
\n" ); document.write( "up:
\n" ); document.write( "x - y = 500/10
\n" ); document.write( "x - y = 50
\n" ); document.write( "---
\n" ); document.write( "down:
\n" ); document.write( "x + y = 300/5
\n" ); document.write( "x + y = 60
\n" ); document.write( "---
\n" ); document.write( "x - y = 50
\n" ); document.write( "x + y = 60
\n" ); document.write( "---
\n" ); document.write( "copy and paste the above standard form linear equations in to this solver:
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\n" ); document.write( "---
\n" ); document.write( "x= 55
\n" ); document.write( "y= 5
\n" ); document.write( "---
\n" ); document.write( "answer:
\n" ); document.write( "boat speed = 55 ft/min = 55 ft/min * (1/5280 mile/ft) * (60 min/hr) = 0.625 mph
\n" ); document.write( "water speed = 5 ft/min = 5 ft/min * (1/5280 mile/ft) * (60 min/hr) = 0.0568 mph
\n" ); document.write( "---
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