Question
Wendy was travelling from Point Z to Point A at a constant speed of 85 km/h. After 4 hours, she passed a van coming from the opposite direction. Wendy travelled another 255 km to reach Point A. At this point, the van was still 46 km from Point Z. What is the average speed of the van?
3 m

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Wendy was travelling from Point Z to Point A at a constant speed of 85 km/h. After 4 hours, she passed a van coming from the opposite direction. Wendy travelled another 255 km to reach Point A. At this point, the van was still 46 km from Point Z. What is the average speed of the van?