A whale swims 250 feet downwards from the sea level to feed. At what level is it now?
250 feet
-250 feet
-300 feet
Data insufficient
If a whale swims 250 feet downwards, then it is 250 feet below the sea level. In other words, the whale is at -250 feet.
A diver is 40 feet below the sea level. How much below/above is he from the sea level after he swims 35 feet towards the surface?