* On Jun 03 14:45 Geoff Armstrong wrote to Bob Lawrence

 GA> A train leaves Sydney heading north at 02:00am travelling at 
 GA> 100km/h. Another train leaves Brisbane at 04:00am travelling at 
 GA> 120km/h. Which one is closer to brisbane when they pass each 
 GA> other?

The purple one!  :-)

David
 

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