Question by Summer Clouds - Discuss with MathYouLike

Summer Clouds moderators

14/11/2017 at 08:51

If Mike travels for 3 hours at a rate of 20 mi/h and then travels for 2 hours at a rate of 30 mi/h, what is his average speed, in miles per hour?

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Phan Thanh Tinh Coordinator 14/11/2017 at 10:03

The total distance Mike travels is : 20 x 3 + 30 x 2 = 120 (mi)

The total time Mike travels is : 3 + 2 = 5 (hours)

The answer is : 120 : 5 = 24 (mi/h)

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