Question

a hallway measuring 90 feet x 7 feet requires 1/2 a fluid ounce of cleaning solution per square foot. how much cleaning solution is required to clean the hallway?

63 fluid ounces
315 fluid ounces
630 fluid ounces
1260 fluid ounces

Explanation:

Calculate the area of the hallway

$$ A = 90\text{ ft} \times 7\text{ ft} = 630\text{ sq ft} $$

Calculate the required cleaning solution

$$ V = 630\text{ sq ft} \times \frac{1}{2}\text{ fl oz/sq ft} = 315\text{ fluid ounces} $$

Answer:

• 63 fluid ounces
• 315 fluid ounces (Correct answer)
• 630 fluid ounces
• 1260 fluid ounces