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John drove for 6 hours at a rate of 50 km per hour and for 2 hours at 60 km per hour. What was his average speed for the whole journey?

User RocketNuts
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1 Answer

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Final answer:

John's average speed for the whole journey is 52.5 km/h.

Step-by-step explanation:

To find John's average speed for the whole journey, we can use the formula:

Average Speed = Total Distance / Total Time

John drove for 6 hours at a rate of 50 km/h, so he covered a distance of 6 x 50 = 300 km. He also drove for 2 hours at a rate of 60 km/h, so he covered a distance of 2 x 60 = 120 km. The total distance for the whole journey is 300 + 120 = 420 km.

The total time for the whole journey is 6 + 2 = 8 hours.

Therefore, John's average speed for the whole journey is 420 km / 8 hours = 52.5 km/h.

User Dijxtra
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