On a floor plan drawn at a scale of 1:100, the area of a rectangular room is 30 cm^2. What is the actual area of the room? A. 30,000 cm^2 B. 3,000 cm^2 C. 3,000 m^2 D. 30 m^2 After playing with precalculus for so long, this word problem should be a walk in the park but it is not. I will have to guess my way through. I think 1:100 is a ratio and if so, then a fraction. Let A = actual area of room 30 = (1/100)A 30/(1/100) = A 30(100) = A 3,000 cm^2 = A I say the answer is B.