A tortoise walks 3 inches in 1 second. How many feet per second can the tortoise walk?

To convert inches to feet, we need to use the conversion factor that 1 foot is equal to 12 inches.

Given that the tortoise walks 3 inches in 1 second, we can set up the conversion:

1. Conversion factor:
   \[ 1 \text{ foot} = 12 \text{ inches} \quad \text{(This means that the inches are in the denominator when converting.)} \]

2. Convert inches to feet:
   \[ \text{Feet per second} = \frac{\text{inches per second}}{12} = \frac{3 \text{ inches}}{12 \text{ inches per foot}} = \frac{3}{12} \text{ feet} \]

3. Simplifying:
   \[ \frac{3}{12} = \frac{1}{4} \text{ feet} \]

Thus, the tortoise can walk \( \frac{1}{4} \) feet per second.

In summary:

• The correct conversion factor has the inches in the denominator when converting to feet, and the feet in the numerator.
• The tortoise can walk \( \frac{1}{4} \) feet per second.