Answer: 20 steps per minute
Work Shown:
12 & 1/2 = 12 + 1/2 = 12 + 0.5 = 12.5
Jerry climbed 250 steps in 12.5 minutes
unit rate = (250 steps)/(12.5 min)
unit rate = (250/12.5) steps per min
unit rate = 20 steps per min
The unit rate is basically the same as the average speed.