Question

An elevator starts on the 100th floor of an building it descends 4 floors ever 10 seconds at what floor will the elevator be 60 seconds after it starts

Answer 1

The elevator will be at the 76th floor after 60 seconds.

Explanation:

In this question, the rate given is 4 floors every 10 seconds. This can be written as:

`(4 floors)/(10 seconds)` =
`(1)/(2.5)`

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.