The submarine is cruising at a depth of 50 meters, then dives 75 meters, then ascends (moves in the direction of the surface )60
meters, and then dives 45 meters. what is the submarine's final depth
1 answer:
Interesting question... let's draw a picture.
50 m ----------
\ ----------------------------- \
75 m down \ / 60 m up 45 m down ------
---------
So what's going on?
Going 75 m deeper: 50 + 75
Coming up 60 m : 50 + 75 - 60
Going 45 m deeper: 50 + 75 - 60 + 45
Final depth: 110 m
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