Question 560431: a plane leaves chicago and flies 750 miles to new york. if it takes 2.5 hours to get to new york against the wind, but only 2 hours to fly back to chicago, what is the plane's rate of speed and what is the wind speed?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! a plane leaves chicago and flies 750 miles to new york. if it takes 2.5 hours to get to new york against the wind, but only 2 hours to fly back to chicago, what is the plane's rate of speed and what is the wind speed?
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Against wind DATA:
distance = 750 miles ; time = 2.5 hrs ; rate = d/t = 750/2.5 = 300 mph
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With wind DATA:
distance = 750 miles ; time = 2 hrs ; rate = d/t = 750/2 = 375 mph
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Equations:
p + c = 375
p - c = 300
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Add and solve for "p":
2p = 675
p = 337.5 mph (speed of the plane in still air)
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Solve for "c":
p + c = 375
337.5 + c = 375
c = 37.5 mph (speed of the wind)
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Cheers,
Stan H.
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