### Casa Grande 30 Minutes From Phoenix?

According to `Maps.Yahoo.com`, downtown Casa Grande is `48.2 miles` from downtown Phoenix. According to an advertisement by `DiscoverCasaGrande.com` in the Arizona Republic, it is a `30 minute` drive from Casa Grande to Phoenix. (And "years away from big city congestion." Note: The value of "years" could be as low as two.)

##### Exercises
1. To drive from downtown Casa Grande to downtown Phoenix in `30 minutes` means driving an average speed of `__________ miles per hour`.

2. The `DiscoverCasaGrande.com` advertisement said Casa Grande was a `40 minute` drive from Tucson; therefore, according to the ad, the travel time between downtown Phoenix and downtown Tucson is `________ minutes`.

3. `Maps.Yahoo.com` says the distance between downtown Phoenix and downtown Tucson is `116 miles`; therefore, to drive between the two towns in `70 minutes` implies an average driving speed of `_________ miles per hour`.

Creator: Gerald D. Thurman [gthurman@gmail.com]
Created: 13 April 2007