Which situation describes opposite quantities that when combined would equal 0?

A plane ascends to 15,000 feet and then descends 10,000 feet. How many feet above the ground is the plane?

A plane ascends to 15,000 feet and then ascends 15,000 feet. How many feet above the ground is the plane?

A plane ascends to 15,000 feet and then descends 15,000 feet. How many feet above the ground is the plane?

A plane ascends to 10,000 feet and then ascends 15,000 feet. How many feet above the ground is the plane?

1 answer

The situation that describes opposite quantities that would equal 0 when combined is:

A plane ascends to 15,000 feet and then descends 15,000 feet. The plane would be 0 feet above the ground in this case.