A mariner descends 20 feet in the water from the boat at the surface of a lake. He then rose 10 feet and descends another 15 feet. At this point what is his final position in water.
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Right Answer is: D
Right Answer is: DLet 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. Therefore, the man is now at 26 feets depth in water.
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