A train takes 6 hours 39 minutes to travel from New Delhi to Kanpur. The train travels a distance of $$\(429 \mathrm{~km}\)$$. Work out the average speed of the train. Give your answer in $$\(\mathrm{km} / \mathrm{h}\)$$ correct to one decimal place. $$\(\mathrm{km} / \mathrm{h}\)$$

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