Ahorse gallops along a racecourse at a speed of 40 km/h it takes the horse 3 minutes to run the length of the track how long is the track in km?

If the horse runs for 1 hour(60 minutes) at a constant speed, it will cover a distance of 40 kilometers. 3 minutes is 1/20 of an hour. (60/3) So in 3 minutes, the horse will run 1/20 of the distance. That is 40/20 = 2 kilometers. Since the horse has completed the race in 3 minutes, the length of the race course is 2 kilometers. The question can also be solved in the unitary method. Distance covered in one minute = Distance/Minutes = 40/60 = 0.67 Kilometers per minute. So in 3 minutes, the distance covered, which is equal to the length of the race course, = 0.67 * 3 = 2 kilometers.

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