



 
Hi Cynthia. Yes, this is a fairly common kind of question, so I think I know what you mean. Here's an example I made up:
It's 40 miles NW from Bisbee to Sierra Vista and 30 miles NE from there to Tombstone. How much further is it go from Bisbee to Tombstone by way of Sierra Vista than going directly? Solution: Thus it is 50 miles directly and 70 miles by way of Sierra Vista, so the difference is 20 miles. Hope this example helps you, Cynthia.  


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