Question

Example 4 A car travelled the first half of its journey at 40 km/h and the next half at 60 km/h. Find the average speed of the car over the whole journey.

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Answer 1

Answer:

Given,

• Speed in the 1st half = 40 km/h

• Speed in the 2nd half = 60 km/h

To Find,

Average Speed.

Formula to be used,

• Average speed = Total distance traveled/Total time taken

Solution,

Putting all the values, we get

Average speed = Total distance traveled/Total time taken

→ Average speed = 2x/(x/40 + x/60)

→ Average speed = 2x × 24/x

Average speed = 48x/x

→ Average speed = 48 km/h

Hence, the average speed of the car over the whole journey. is 48 km/h.

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Step-by-step explanation:

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