Question
Shiyun was travelling from Point X to Point Y at a constant speed of 85 km/h. After 5 hours, she passed a convertible coming from the opposite direction. Shiyun travelled another 340 km to reach Point Y. At this point, the convertible was still 57 km from Point X. What is the average speed of the convertible?
3 m

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Shiyun was travelling from Point X to Point Y at a constant speed of 85 km/h. After 5 hours, she passed a convertible coming from the opposite direction. Shiyun travelled another 340 km to reach Point Y. At this point, the convertible was still 57 km from Point X. What is the average speed of the convertible?