Answer:
The elevator will be at the 76th floor after 60 seconds.
Step-by-step explanation:
In this question, the rate given is 4 floors every 10 seconds. This can be written as:
[tex]\frac{4 floors}{10 seconds}[/tex] = [tex]\frac{1}{2.5}[/tex]
So, the elevator descends at a rate of 1 floor every 2.5 seconds. We can find the number of floors descended after 60 seconds by dividing: 60/2.5 = 24 floors. Since the elevator is starting at the 100th floor, we would subtract 100 - 24 = 74, or the 74th floor that the elevator would be at after 60 seconds.
