...direction along a road running? parallel to the train tracks. IF the train is moving at a rate of 25 mph and the boy is pedaling at a rate of 15 mph. How long will it take train to pass the boy.
Difference of speed = 25 mph - 15 mph = 10 mph
Length of the train = 1/4 mile
Time taken by the train to pass the boy = 1/4 * 1/10 = 1 / 40 Hours
i.e., 1 / 40 * 60 = 1.5 minutes
