Question
Penelope was travelling from Point P to Point Q at a constant speed of 90 km/h. After 5 hours, she passed a bus coming from the opposite direction. Penelope travelled another 270 km to reach Point Q. At this point, the bus was still 39 km from Point P. What is the average speed of the bus?
3 m

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Penelope was travelling from Point P to Point Q at a constant speed of 90 km/h. After 5 hours, she passed a bus coming from the opposite direction. Penelope travelled another 270 km to reach Point Q. At this point, the bus was still 39 km from Point P. What is the average speed of the bus?