Since Iris completes 2/3 of the floor in 1/3 of an hour, it means she completes 2/3 / 1/3 = 2 square feet of the floor in 1 hour.
Therefore, she will complete the entire floor in 1 hour. Answer: B. 1 hour.
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)
A. 1/2 hours
B. 1 hour
C. 2/3 hours
D. 1 1/2
1 answer