Question
A van and a Porsche were travelling from Town U to Town V which were 660 km apart. The Porsche set off 212 h later than the van but arrived 112 h earlier. If the average speed of the van was 66 km/h, find the average speed of the Porsche.
2 m

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A van and a Porsche were travelling from Town U to Town V which were 660 km apart. The Porsche set off 212 h later than the van but arrived 112 h earlier. If the average speed of the van was 66 km/h, find the average speed of the Porsche.