SOLUTION: An airplane travels 5 hours with a 35mi/h tail wind. The return trip against the same wind took 7 hours. Find the speed of the plane in no wind.

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Question 390286: An airplane travels 5 hours with a 35mi/h tail wind. The return trip against the same wind took 7 hours. Find the speed of the plane in no wind.
Answer by chrisrao(11) About Me  (Show Source):
You can put this solution on YOUR website!
Assume the distances the airplane travalled for two trips are the same:
5%2A%28V%2B35%29=7%2A%28v-35%29
5V+%2B+5%2A35+=+7V+-+7%2A35
12%2A35+=+2V
V+=+6%2A35
V+=+210
V = 210 mi/h