document.write( "Question 938631: A boat is traveling in a river with a current that has a speed of 1.5km/h. In one hour the boat can travel twice the distance downstream as it can travel upstream. What's the boats speed in still water? \n" ); document.write( "
Algebra.Com's Answer #571826 by stanbon(75887)\"\" \"About 
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A boat is traveling in a river with a current that has a speed of 1.5km/h. In one hour the boat can travel twice the distance downstream as it can travel upstream. What's the boats speed in still water?
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\n" ); document.write( "Downstream DATA:
\n" ); document.write( "time = 1 hr ; distance = 2x km ; rate = d/t = 2x km/hr
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\n" ); document.write( "Upstream DATA:
\n" ); document.write( "time = 1 hr ; distance = x km ; rate = x km/hr
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\n" ); document.write( "Equations:
\n" ); document.write( "Dowmstream:: b + 1.5 = 2x km/hr
\n" ); document.write( "Upstream:::: b - 1.5 = x km/hr
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\n" ); document.write( "Subtract and solve for \"x\"::
\n" ); document.write( "3 = x
\n" ); document.write( "x = 3
\n" ); document.write( "---
\n" ); document.write( "solve for \"b\"::
\n" ); document.write( "b - 1.5 = 3
\n" ); document.write( "b = 4.5 km/hr (speed of the boat in still water)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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