Question
A van travelled 59 of its journey at an average speed of 145 km/h. Find its average speed for the remaining 464 km if its average speed for the whole journey was 87 km/h.
2 m

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A van travelled 59 of its journey at an average speed of 145 km/h. Find its average speed for the remaining 464 km if its average speed for the whole journey was 87 km/h.