Question
A lorry and a Porsche were travelling from Town R to Town S which were 672 km apart. The Porsche set off 216 h later than the lorry but arrived 256 h earlier. If the average speed of the lorry was 56 km/h, find the average speed of the Porsche.
2 m

Click button first when a symbol is required. X

A lorry and a Porsche were travelling from Town R to Town S which were 672 km apart. The Porsche set off 216 h later than the lorry but arrived 256 h earlier. If the average speed of the lorry was 56 km/h, find the average speed of the Porsche.