Answer: D. About
inches per hour.
Explanation:
1. The city received
inches of rain in
hours.
2. Let's write the mixed number as decimal numbers:


3. To find the approximate rainfall rate in inches per hour, you must divide 12.25 inches by 25.5 hours, as following:

4. If you round the result to the nearest tenth, you obtain:

5. Therefore, the answer is the option D.