Air traffic control detects two airplanes at the same

Last updated: 8/13/2022

Air traffic control detects two airplanes at the same altitude converging on a single point as they fly at right angles to each other. One plane is 152 miles away from the point, flying at 420 miles per hour. The other plane is 714 miles away from the point, traveling at 445 miles per hour. At what rate is the distance between the two planes changing? miles per hour