Question
A lorry and a Mercedes were travelling from Town P to Town Q which were 684 km apart. The Mercedes set off 323 h later than the lorry but arrived 213 h earlier. If the average speed of the lorry was 57 km/h, find the average speed of the Mercedes.
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A lorry and a Mercedes were travelling from Town P to Town Q which were 684 km apart. The Mercedes set off 323 h later than the lorry but arrived 213 h earlier. If the average speed of the lorry was 57 km/h, find the average speed of the Mercedes.