A train departed from city A to town B 180 km away at 9 in the morning.Tomarrived to the railway station late,therefore he went from A to B by car.He arrived atB at the same time as the train.The average speed of the car was 40 km/hours morethan the

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/25 08:18:30

A train departed from city A to town B 180 km away at 9 in the morning.Tom
arrived to the railway station late,therefore he went from A to B by car.He arrived at
B at the same time as the train.The average speed of the car was 40 km/hours more
than the average speed of the train.When started Tom from

180/40=4.5H
所以Ton迟到了火车4.5H  其出发时间为下午1点半

条件不够

感觉少条件啊。