Question
Dana was travelling from Point Y to Point Z at a constant speed of 65 km/h. After 3 hours, she passed a bus coming from the opposite direction. Dana travelled another 130 km to reach Point Z. At this point, the bus was still 57 km from Point Y. What is the average speed of the bus?
3 m

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Dana was travelling from Point Y to Point Z at a constant speed of 65 km/h. After 3 hours, she passed a bus coming from the opposite direction. Dana travelled another 130 km to reach Point Z. At this point, the bus was still 57 km from Point Y. What is the average speed of the bus?