Answer:
a. 1.0453 minutes/ft²
b. 120 minutes (2 hours)
c. $50
Step-by-step explanation:
a. The area is (10.5 ft)×(12.3 ft) = 129.15 ft². Then the time per square foot is ...
... (2.25 hours)/(129.15 ft²) ≈ 0.0174216 hours/ft² ≈ 1.0452396 min/ft²
b. Multiplying the number of square feet by the time per square foot gives the time for the smaller area:
... (1.0452396 min/ft²) × (114.8 ft²) = 120 min = 2 hours
c. The charge is assumed to be proportional to the time, so the charge for the smaller time is ...
... (2 hours)/(2.25 hours) × $56.25 = (8/9)×$56.25 = $50.00
