Question

A person travels 120 km in 6 h, the next 130 km in 5 h and the next 200 km in 4 h.Find his average speed during the whole journey.

Answer 1

Answer:

average speed is 30 km /h

Answer 2

The average speed during the whole journey is 30 km/h.

Explanation:

Total distance covered by a person is 120 km + 130 km +200 km = 450 km

Total time taken is 6 h + 5 h + 4 h = 15 h

The average speed during the whole journey is given by :

$v=\dfrac{d}{t}\\\\v=\dfrac{450\ km}{15\ h}\\\\v=30\ km/h$

So, the average speed during the whole journey is 30 km/h.

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