BARS::Exit 147 on I-10 West in Phoenix, Arizona

This road signs are on westbound I-10 in Phoenix, Arizona.

The road signs say...

   +------+ +----------------+ +----------------+
   | RAMP | | Left Exit 147C | |    10 West     |
   |  45  | |    51 North    | |  HOV 2+ Only   |
   |  MPH | |   HOV 2+ Only  | | 6-9am  Mon-Fri |
   +------+ | 6-9am    3-7pm | | 3-7pm          |
            |     Mon-Fri    | +----------------+
            +----------------+
         +---------------------+
         |         Exit 147A-B |
         | North 51   East 202 |
         +---------------------+
   the numbers are:  45  147  51  2  6  9  3  7  
                     10  2  6  9  3  7  147  51  202
                     

   observe...
      eliminate the two 147s: 147 - 147 = 0
      common parts of each HOV sign become 50s:  
         2 * (6 + 9 + 3 + 7) = 50

   the numbers become:  45  51  10  51  202  0  50  50

   the math is:  10 * (50 - 45) + 50 + 0 = 202 - 51 - 51

   observe...
      left-side:
         50 - 45 = 5
         10 * 5 = 50
         50 + 50 = 100
      right-side:
         202 - 51 = 151
         151 - 51 = 100

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 02 January 2008

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This work is licensed under a Creative Commons Attribution 3.0 United States License.