### BARS::10 Miles North of Yuma on US Hwy-95 in Arizona

This road sign is on southbound US Hwy-95 in Arizona.

```   +----------------+
| Yuma        10 |
| Somerton    21 |
| Mexico      31 |
+----------------+
```
```   the numbers are:  10  21  31

the math is:  10 + 21 = 31

[solve for 'n']  10 + n = 31
```

The following road sign evaluations were added on 28 November 2008 as a result of this BARS being used as one of the BARS of the Week for week 15 of the fall 2008 semester.

```   rs42Eval:  21 + 31 - 10 = 42
* 42 is the "Answer to Life, the Universe, and Everything"

[solve for 'n']  21 + 31 - n = 42

rsAgeEval:  21 + 31 - 10base-2 = 50
* RoadHacker found this sign when he was 50 years young.

rsAgeEval:  21 + 31 - log(10) = 51
* MathBabbler was 51 years young when he inserted this equation.

[exercise]  log(10) = ______
```
##### Update::2009.09.04

This BARS was selected to be one of the BARS of the Week for week #3 of the fall 2009 semester.

```   the numbers are:  10  21  31

more math:  31 % 21 = 10

rsAgeEval:  log(10) * (21 + 31) = 52
* MathBabbler was 52 years young when he found this equation.
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 17 December 2007 