Question
Opal was travelling from Point X to Point Y at a constant speed of 60 km/h. After 4 hours, she passed a sports car coming from the opposite direction. Opal travelled another 180 km to reach Point Y. At this point, the sports car was still 51 km from Point X. What is the average speed of the sports car?
3 m

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Opal was travelling from Point X to Point Y at a constant speed of 60 km/h. After 4 hours, she passed a sports car coming from the opposite direction. Opal travelled another 180 km to reach Point Y. At this point, the sports car was still 51 km from Point X. What is the average speed of the sports car?