Question
A bus and a Porsche were travelling from Town N to Town P which were 855 km apart. The Porsche set off 313 h later than the bus but arrived 223 h earlier. If the average speed of the bus was 57 km/h, find the average speed of the Porsche.
2 m

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A bus and a Porsche were travelling from Town N to Town P which were 855 km apart. The Porsche set off 313 h later than the bus but arrived 223 h earlier. If the average speed of the bus was 57 km/h, find the average speed of the Porsche.