A submarine was at a depth of 225 meters below sea level. It rose 80 meters, then it dove 35 meters. How far below sea level was the submarine after ascending and descending.

To find the final distance below sea level, we need to subtract the distance the submarine ascended from the distance it descended.

1. Start with the initial depth of the submarine: 225 meters below sea level.
2. The submarine rose 80 meters, so we add this value to the initial depth: 225 + 80 = 305 meters below sea level.
3. Next, the submarine descended 35 meters. We subtract this value from the depth obtained in step 2: 305 - 35 = 270 meters below sea level.

Therefore, after ascending and descending, the submarine is 270 meters below sea level.

225 - 80 + 35 = 180 m below sea level