Question 721085: A plane travels 400 mi against the wind in 4 hrs, and makes the return trip in 1 hr . What is the wind speed?
help! Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Do it like this one:
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A boat travels 24 mi downstream in 3 hrs and returns in 12 hrs. Speed of the stream?
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The speed of the boat (wrt the land) is the average of the speed up & downstream.
24/3 = 8 mi/hr
24/12 = 2 mi/hr
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Boat's speed = (8+2)/2 = 5 mi/hr
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The current is the difference
8 - 5 = 3 mi/hr
