Question

A submarine descended 1400 meters below the surface of the water. It then rose 800 meters and then descended 350 meters. What was the submarine's net gain or loss in altitude?

–1200 m

–950 m

–400 m

650 m

Answer 1

well if its below that would be -1400, rising +800 and desending at -350

so the problem is -1400+800-350

-1400+800-350

-600-350

-950

Answer 2

descended 1400+descended 350 meters- rose 800 meters 1400+350=1750m 1750 m-800m=950m