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 in 1 hour, she would be able to complete 2/3 * 3/1 = <<2/3*3/1=2>>2 floors.
Therefore, it will take her 1/2 of an hour to complete the entire floor. Answer: \boxed{0.5}.