Question
A van travelled 29 of its journey at an average speed of 80 km/h. Find its average speed for the remaining 560 km if its average speed for the whole journey was 60 km/h.
2 m

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A van travelled 29 of its journey at an average speed of 80 km/h. Find its average speed for the remaining 560 km if its average speed for the whole journey was 60 km/h.