Average Speed

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Posted · Report post

If you drive to the store at 20 mph, how fast must you go (again returning by the same route) for your average speed to be 40 mph?
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Posted · Report post

Hmm...it seems...impossible. Is that it?

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Posted · Report post

why?

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Posted · Report post

why?

Because you've run out of time when you reached the store.

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