Question

A scooterist travel at 36 km/ he for 5 hours and 45 km/ he for 4 hrs find his average speed for the whole journey

Answer 1

36(5) + 45(4) = 360km

average speed = 360km/ 9hr = 40km/h

Answer 2

Speed at 36 km/hour

⇒ 1 hour = 36 km

⇒ 5 hours = 36 x 5 = 180 km

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Speed at 45 km/hour

⇒ 1 hour = 45 km

⇒ 4 hours = 45 x 4 = 180 km

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Total distance - 180 + 180 = 360 km

Total time = 5 + 5 = 9 hours

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Average Speed = Distance ÷ Time

Average Speed = 360 ÷ 9 = 40 km/hour

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Answer: The average speed is 40 km/hour

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