Question

A diver begins at 90 feet below sea level. she descends at a steady rate of 6 feet per minute for 6 minutes. then, she ascends 20 feet. this expression shows her current depth in feet. what is her current depth? feet feet feet feet

Answer 1

her depth is 106FT. below sea level.

Answer 2

Answer: Her current depth is 106 feet below the sea level.

Explanation:

Since we have given that

Distance a diver covered below sea level = 90 feet

Since it is below the sea level, so it will be written as (-) 90 feet.

After this, she descends at a steady rate of 6 feet per minute for 6 minutes.

So, Speed = 6 feet per minute

Time taken by him = 6 minutes

So, Distance covered =
`6* 6=36\ feet`

Again she descends by 36 feet which is written as (-) 36 feet.

So, she reached at

`=(-)90-36\\\\=(-)126\ feet`

Again, she ascends 20 feet.

Since she ascends by 20 feet then it will be written as (+)20 feet.

So, she reached at

`=-126+20\\\\=-106\ feet`

Hence, her current depth is 106 feet below the sea level.