Jim and Carla are scuba diving. Jim started out 12 feet below the surface. He descended 20 feet, rose 3 feet, and descended 7 more feet. Then he rested. Carla started out at the surface. She descended 16 feet, rose 3 feet, and descended another 20 feet. Then she rested. Which person rested at a greater depth? Complete the explanation. Jim rested at (select) feet below the surface while Carla rested at feet below the surface.
Therefore (select) rested at a greater depth.