Iris is asked to sweep the gymnasium for after a basketball game is requires her to push a sweeper from one end of the gym to the other repeating pattern until she’s covered the entire floor. She can please 2/3 of the four in 1/3 of an hour at this rate, how long will it take her to complete the entire floor?

Answer 1

If Iris can please 2/3 of the floor in 1/3 of an hour, it means that she can clean 1/3*(2/3) = 2/9 of the floor in 1/3 of an hour.
Since 1/3 of an hour can clean 2/9 of the floor, then it will take her 1 hour/1/3 hour*(9/2) = 9/2 = 4.5 hours to complete the entire floor. Answer: \boxed{4.5}.