A train travels 450km in 3 hours.

The distance is measured correct to the nearest 10 kilometres.

The time is measured correct to the nearest 10 minutes.

Give your answer by calculating the upper bound for the average speed in km/minutes. No spam links, please.

A train travels 450km in 3 hours The distance is measured correct to the nearest 10 kilometres The time is measured correct to the nearest 10 minutes Give your class=


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