Use the following information to answer questions 46-49.
A balloonist collecting data on pollutants at various levels above the ground takes off at 8:00 A.M. When the balloon is in motion, it moves only straight up or straight down and at a constant speed within each hour-long interval. The balloon is at an altitude that is a multiple of 100 meters at the beginning of each hour. The balloon lands at 2:00 P.M. at the same spot from which it took off. The altitude of the balloon, in meters above the ground, is shown in the figure below.
47. What was the total time, in hours and minutes, that the balloon was at least 200 meters above the ground?