Christina can paint 420 square feet in 105 minutes. Which unit rate describes the scenario?

4 square feet per minute
One-fourth square foot per minute
1 square foot per 4 minutes
1 square foot per One-fourth minute

1 answer

To find the unit rate of how many square feet Christina can paint per minute, we can divide the total area painted (420 square feet) by the total time taken (105 minutes).

Unit rate = \(\frac{420 \text{ square feet}}{105 \text{ minutes}} = 4 \text{ square feet per minute}\)

So the correct unit rate that describes the scenario is 4 square feet per minute.