Bob needs to place a decoration on a shelf located 25 centimeters below the ceiling in his living room. The ceiling is 3.0 meters above the floor. Bob is 1.7 meters tall and can reach 50 centimeters above the top of his head. Standing on a stool, he can just reach the shelf. What is the height of the stool, in centimeters?
50
52
55
58
60
