Question
A truck travelled 25 of its journey at an average speed of 165 km/h. Find its average speed for the remaining 495 km if its average speed for the whole journey was 75 km/h.
2 m

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A truck travelled 25 of its journey at an average speed of 165 km/h. Find its average speed for the remaining 495 km if its average speed for the whole journey was 75 km/h.