An air traffic controller spots two airplanes at the same altitude converging to

Question

An air traffic controller spots two airplanes at the same altitude converging to a point as they fly at right angles to each other. One airplane is 75 miles from the point and has a speed of 450 miles per hour. The other is 100 miles from the point and has a speed of 600 miles per hour.

An air traffic controller spots two airplanes at the same altitude converging to a point as they fly at right angles to each other. One airplane is 75 miles from the point and has a speed of 450 miles per hour. The other is 100 miles from the point and has a speed of 600 miles per hour.

___mph (b) How much time does the controller have to get one of the airplanes on a different flight path?
___h

Explanation / Answer

Time required = distance/speed = 75/450 = 1/6 = 100/600

Thus controller has 1/6 hours = 10 minutes to get one of the planes on different flight path.  

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