Maths

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A boy cycled from his home to a friend's house 24km away at an average speed of 16km/h. Finding his friend absent, he returned home immediatly at an average speed of 12km/h. Find the average speed
I know how to find the average speed, just that I need to know how to find out the total distance

• Maths -

The boys are 24 km apart and one of them makes a round trip back and forth.

The total distance travelled is 48 km.

Use that and the total elapsed time for the average speed.

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