a submarine descended to a level 230m below the surface of the ocean. later it ascended 95m and then dove 120m. what was the new depth of the submarine?

230m -95m + 120m = ??

255m

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To find the new depth of the submarine, we can add or subtract the changes in depth.

Starting depth: 230m
First change: Ascended 95m (subtracted from the current depth)
Second change: Dove 120m (added to the current depth)

So, to find the new depth:

230m - 95m + 120m = 255m

Therefore, the new depth of the submarine is 255m.

To find the new depth of the submarine, you need to subtract the ascent and add the descent to the initial depth.

The initial depth was 230m. The submarine ascended 95m, so you need to subtract 95m: 230m - 95m = 135m.

Then, the submarine dived 120m, so you need to add 120m: 135m + 120m = 255m.

Therefore, the new depth of the submarine is 255m.