Question

A research submarine dives at a speed of 100​ ft/min directly toward the research lab. How long will it take the submarine to reach the lab from the surface of the​ ocean?

Can you explain why you got the answer too please

Answer 1

It will take 29.2 minutes in order for the submarine to reach the lab from the surface of the​ ocean.

Solution

To determine how long it will take the submarine to reach the lab from the surface of the ocean, we need to know how far it is from the surface of the ocean to the lab. Since this is not given, let us present the distance as D.

The submarine travels at 100ft/min

He also travels a distance of Dft

Then the ratio below is correct:

`1/100 = x/D`

`x = D/100`

Where x is the time we want to find.

If you have omitted the distance D by mistake, all you need to do is divide it by 100 to get the time you are looking for.

Answer 2

The submarine travels 100 ft / min.

Explanation:

To determine how long it will take the submarine to reach the lab from the surface of the ocean, we need to know how far it is from the surface of the ocean to the lab. Since this is not given, let us present the distance as D

The submarine travels at 100ft/min

He also travels a distance of D ft

Then the ratio below is correct:1/100 = x/Dx = D/100

Where the x is the time we want to find. If you have omitted the distance D by mistake, all you need to do is divide it by 100 to get the time you are looking for.