Question

a submarine is cruising at -40 meter (40 meters below the surface).It descends 20 1/4 meters; then it rises 15 3/8 meters.What is the submarine's new depth

Answer 1

decends 20 and 1/4 so going down
20 and 1/4=20.25

-40-20.25=-60.25
then rises (goes up ) 15 and 3/8
15 and 3/8=15.375
-60.25+15.375=-44.875
the depth is -44 and 7/8 meters

Answer 2

44.875 must be the answer