Question
Dana was travelling from Point X to Point Y at a constant speed of 75 km/h. After 5 hours, she passed a van coming from the opposite direction. Dana travelled another 225 km to reach Point Y. At this point, the van was still 51 km from Point X. What is the average speed of the van?
3 m

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Dana was travelling from Point X to Point Y at a constant speed of 75 km/h. After 5 hours, she passed a van coming from the opposite direction. Dana travelled another 225 km to reach Point Y. At this point, the van was still 51 km from Point X. What is the average speed of the van?