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the average is ... total depth / total time
it went slower in the beginning
Thanks
it went slower in the beginning
We are given that after 10 minutes, the bell is at a depth of 300 ft, and after 30 minutes, the bell is at a depth of 1400 ft. This gives us two data points: (10, 300) and (30, 1400).
To calculate the change in depth, we subtract the initial depth from the final depth: 1400 ft - 300 ft = 1100 ft.
Similarly, to calculate the change in time, we subtract the initial time from the final time: 30 min - 10 min = 20 min.
Now we can calculate the average rate of lowering per minute by dividing the change in depth by the change in time: 1100 ft / 20 min = 55 ft/min.
Therefore, the average rate of lowering per minute is 55 ft/min.