During the first 45 mins, its average speed was 100 km/h.Steadyberry wrote:pls help. thank you very much.

a motorcycle travelled 75km in 45 mins and later increased its speed by 20% for the next 150km. what was the average speed of the motorcycle for the whole journey?

We are told that for the remaining 150 km, its average speed was 120 km/h. And so it would have taken 1 hr 15 min to travel that 150 km.

Altogether, it took 2 hours to travel 225 km. And so the average speed for the whole journey was 112.5 km/h.

Hope this helps and feel free to ask for any clarifications.

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