document.write( "Question 346415: Fernandos's motorboat can travel 30mi/h in still water. if the boat can travel 9 miles downstram in the same time it takes to travel 1 mile upstream what is the rate of the river's current? \n" ); document.write( "
Algebra.Com's Answer #248011 by scott8148(6628)\"\" \"About 
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time = distance / rate\r
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\n" ); document.write( "\n" ); document.write( "9 / (30 + c) = 1 / (30 - c)
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