SOLUTION: With a certain tail wind an airplane reached its destination, 630 miles away, in 1½ hours. Flying back against the same wind, the plane took 15 minutes longer to make the trip. Fin

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Question 151834: With a certain tail wind an airplane reached its destination, 630 miles away, in 1½ hours. Flying back against the same wind, the plane took 15 minutes longer to make the trip. Find the wind speed and the plane's airspeed
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
630/1.5=420 MPH IS THE SPEED WITH THE TAIL WIND.
630/1.75=360 MPH IS THE SPEED AGAINST THE WIND.
(420-360)/2=60/2=30 MPH IS THE WIND SPEED.
420-30=390 FOR THE PLANE SPEED
360+30=390 DITTO.