If Iris completes 2/3 of the floor in 1/3 of an hour, then she completes 1/3 * (1/3) = 1/9 of the floor in 1/3 of an hour.
If she completes 1/9 of the floor in 1/3 of an hour, then it will take her 1 / (1/9) = 9/1 = <<1/(1/9)=9>>9 hours to complete the entire floor. Answer: \boxed{9}.
Iris is asked to sweep the gymnasium floor after a basketball game. This requires her to push a sweeper from one 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 answer
1 answer