1.

busservicewithabusleayinginTwo towns A and B are connected by a regulareither direction every T minutes. A man cycling with a speed of 20 km h-1 in thedirection A to B notices that a bus goes past him every 18 min in the direction ofhis motion, and every 6 min in the opposite direction. What is the period Tof thebus service and with what speed (assumed constant) do the buses ply on theroad?

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