BARS::I-10 Westbound Between Benson and Tucson in Arizona

On 1 July 2007, RoadHacker drove I-10 west between Benson and Tucson. He saw math in a couple of the road signs, but was unable to get pictures. Upon returning home found pictures of the road signs on the RockyMountainRoads.com website. RoadHacker plans to get his own pictures of these road signs, but he's not sure when

RockyMountainRoads.com:: 43 Miles West of Tucson on Westbound I-10 in Arizona

The road sign says...

   +-------------------+
   | Jct 83 South   20 |
   | Jct 19         41 |
   | Tucson         43 |
   +-------------------+

   the numbers are:  83  20  19  41  43

   the math is:  41 + 43 - 83 + 19 = 20

RockyMountainRoads.com:: 33 Miles West of Tucson on Westbound I-10 in Arizona

The road sign says...

   +-------------------+
   | Jct 83         10 |
   | Jct 19         31 |
   | Tucson         33 |
   +-------------------+

   the numbers are:  83  10  19  31  33

   the math is:  sqrt(83 - (33 - 31)) + 10 = 19

   observe...
      33 - 31 = 2
      83 - 2 = 81
      sqrt(81) = 9
      9 + 10 = 19

Creator: Gerald D. Thurman [gthurman@gmail.com]
Created: 03 July 2007

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