Question
A bus and a Porsche were travelling from Town E to Town F which were 840 km apart. The Porsche set off 223 h later than the bus but arrived 113 h earlier. If the average speed of the bus was 60 km/h, find the average speed of the Porsche.
2 m

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A bus and a Porsche were travelling from Town E to Town F which were 840 km apart. The Porsche set off 223 h later than the bus but arrived 113 h earlier. If the average speed of the bus was 60 km/h, find the average speed of the Porsche.