Question
Zoe was travelling from Point P to Point Q at a constant speed of 80 km/h. After 2 hours, she passed a car coming from the opposite direction. Zoe travelled another 80 km to reach Point Q. At this point, the car was still 51 km from Point P. What is the average speed of the car?
3 m

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Zoe was travelling from Point P to Point Q at a constant speed of 80 km/h. After 2 hours, she passed a car coming from the opposite direction. Zoe travelled another 80 km to reach Point Q. At this point, the car was still 51 km from Point P. What is the average speed of the car?