In (a) you are given a distance (32.12 m) and a rate (8.8 m/min), and are asked to find the time required to ascend this far at this rate.
Since d=rt, t = d/r. Here, d = 32.12 m / (8.8 m/min) = 3.65 min.
b) think about this and then share your own answer.
c) This time has already been calculated, in part a.