These speed limit signs were located in Casa Blanca, Arizona.

The signs say...

+-------------+ | SCHOOL | +-------------+ | Speed | | Limit | | 15 | +-------------+ | 7:30am | | to 3:30 pm | +-------------+ | other times | |-------------| | Speed | | Limit | | 35 | +-------------+ the numbers are: 15 7 30 3 30 35 the math is: 15 / 3 x 7 - 35 + 30 = 30 15 / 3 = 5 ... 5 x 7 = 35 35 - 35 = 0 ... 0 + 30 = 30 ...or... 30 + 30 - 7 - 3 - 35 = 15## Zero RSeval

These speed limit signs are also a Zero RSeval because they evaluate to zero.

30 + 30 - 7 - 3 - 35 - 15 = 0

**Creator:** Gerald D. Thurman
[gthurman@gmail.com]

**Created:** 28 April 2006

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