Question
Xuan was travelling from Point S to Point T at a constant speed of 100 km/h. After 3 hours, she passed a van coming from the opposite direction. Xuan travelled another 200 km to reach Point T. At this point, the van was still 32 km from Point S. What is the average speed of the van?
3 m

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Xuan was travelling from Point S to Point T at a constant speed of 100 km/h. After 3 hours, she passed a van coming from the opposite direction. Xuan travelled another 200 km to reach Point T. At this point, the van was still 32 km from Point S. What is the average speed of the van?