1hr = 60mins/4 = 15mins
15mins = 1/4
45mins = 3/4
2/3 of 3/4 OR 2/3 ÷ 3/4 = 8/9 = 2.25/4 = 0.5625 * 60 = 33.25mins
Cole used 33.25mins of his free time
