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Julie and Eric row their boat (at a constant speed) 27 miles downstr

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Julie and Eric row their boat (at a constant speed) 27 miles
downstream for 3 hours, helped by the current. Rowing at
the same rate, the trip back against the current takes 9
hours. Find the rate of the current.
Solution
down the stream
speed= distance/time=9 mi/hr
up the stream = 3 mi/hr
the rate of current is 6mi/hr
therefore = 6/2= 3mi/hr

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Julie and Eric row their boat (at a constant speed) 27 miles downstream for 3 hours, helped by the current. Rowing at the same rate, the trip back against the current takes 9 hours. Find the rate of the current. Solution down the stream speed= distance/time=9 mi/hr up the stream = 3 mi/hr the rate ...
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