Question

A diver went 25.65 feet below the surface of the ocean and then 16.5 feet further down he then rose 12.45 feet. Write and solve an expression to find the divers new depth

Answer 1

X= 25.65 + 16.5 - 12.45
X=29.70

Answer 2

`-29.7` feet that is 29.7 feet below the ocean surface.

Explanation:

Let x represent divers new depth.

We have been given that a diver went 25.65 feet below the surface of the ocean. This means that the diver's elevation will be negative 25.65 with respect to surface of ocean.

Again, the diver went down 16.5 feet, so the diver's elevation after second dive would be
`-25.65+(-16.5)`.

Finally, the diver rose 12.45 feet. This means that diver's elevation at the 3rd dive would be positive 12.45 feet.

`\text{Diver's final elevation}=-25.65+(-16.5)+12.45`

`x=-42.15+12.45`

`x=-29.7`

Therefore, the diver's new depth would be
`-29.7` feet that is 29.7 feet below the ocean surface.