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题某人在马路上行走,环行公共汽车每隔a分钟就有一辆与人迎面相遇,每隔b分钟就有一辆从背后越过此人,若人与汽车均做匀速运动,问汽车站朝同一方向每隔几分钟发车一趟。(1979年太原市中考试题)
Someone is walking on the road and every hour in the ring bus there is a meeting with a person. Every b minutes there is a person crossing the back from behind. If the person and the car are doing uniform movements, ask the bus station to face the same Directions start every few minutes. (1979 test in Taiyuan City)