Question
A lorry and a Ferrari were travelling from Town Q to Town R which were 690 km apart. The Ferrari set off 213 h later than the lorry but arrived 123 h earlier. If the average speed of the lorry was 69 km/h, find the average speed of the Ferrari.
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A lorry and a Ferrari were travelling from Town Q to Town R which were 690 km apart. The Ferrari set off 213 h later than the lorry but arrived 123 h earlier. If the average speed of the lorry was 69 km/h, find the average speed of the Ferrari.