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Brain Teasers

Week 17 - Thursday

#109

Week 17 - Thursday

 

A train covers its outward journey at 81 mph.

It returns, over exactly the same distance at 64.8 mph.

What will be the train’s average speed over the entire journey?

 

 

The answer to this puzzle will be revealed on 28.04.14

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Show Answer

72 mph.