3/4 of 60 minutes is 45 minutes. Then if they played dodge ball 3/4 (75%) of that time the answer is: 3/4 (75%) of 45 minutes = 33.75 minutes. Then 33.75 minutes divided by 60 minutes = 0.5625 (56.25%) of 60 minutes playing dodge ball. Liv219 has already given you the answer in fraction form.