Question

A diver descends 20 feet in the water from the boat at the surface of the lake. He then rose12 feet and descends another 18 feet. At this point, what is his depth in water?

• A. -13
• B. -17
• C. -21
• D. -26

Answer 1

The correct option is D -26

Let the initial position of the diver be 0.
Now, the diver descends 20 feet in the water which can be given as -20 feets.
Then he rose 12 feet i.e. +12 feets and he descends another 18 feet i.e. -18 feets.
Now his depth in water = final position = (-20 +12 -18) feets = -26 feets
Therefore, the man is now at 26 feets depth in water.