You are pushing a box North in the hallway, at 20n, and a friend gets in front of the box and goes in the opposite direction, at 30n. What direction is the box going at? How much force does the box have going in that direction? (PLEASE HELP)

The box is going south (opposite of north) at 10 N.

plz mark brainliest!!:DD

the answer would be a

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