Iris is asked to sweep the gymnasium floor after a basketball game. This requires her to push a sweeper from one end of the gym to the other and repeating the pattern until she has covered the entire floor. She completes 2/3 of the floor in 1/3 of an hour. At this rate, how long will it take her to complete the entire floor?
(1 point)
If Iris completes 2/3 of the floor in 1/3 of an hour, then she completes 1/3 * (3/2) = 1/2 of the floor in 1/3 of an hour.
Therefore, it will take her 1/2 * (3/1) = <<1/2*(3/1)=3/2>>3/2 = 1.5 hours to complete the entire floor. Answer: \boxed{1.5}.