plains and submarine

Question

An airplane flies at an altitude of 14,690 ft while a submarine is submerged at a depth of 521 feet below the surface of the ocean.. What is the difference between these two elevations?

Answer 1

The airplane is at an altidute of 14,690 ft while the submarine is submerged 521 ft.

 

This means that the airplane is at +14,690 and the submarine is at -521.

 

To find the difference, we subtract:

 

14,690 - (-521) =

 

Notice how we have two negative signs next to each other, this makes a possitiv

 

14,690 + 521 = 15,211

 

The difference between the two elevations is 15,211 ft

 

I hope this helped!