The two cars

Find the speed?

Two cars run at constant speeds around a one-mile racetrack. The faster car passes the slower car every two minutes if the cars run in the same direction. If they run in opposite directions, they meet every 15 seconds. Find the speed of the faster car in miles per hour.

Details and assumptions

The racetrack is 'circular' in the sense that the start and end points are the same, and the cars are running laps around the racetrack
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