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April 16, 2014

Homework Help: math

Posted by Lindsay on Friday, November 23, 2012 at 12:01am.

a cyclist travels the 30 km from Town A to Town B at an average speed of 25 km/h and immediately continues the journey to town C, which is a further 60 km away at an average speed of 20 km/h.
What is the average speed for the whole journey?

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