Metaphysics itself is a branch of philosophy that advocates beyond physical or abstract concepts and ontology is a sub-branch of metaphysics dealing with the nature of being or existence. It focuses on the concepts related to human existence and their relations. It questions the objective reality and attempts to find the meanings of being. for example, Plato and Aristotle both proposed their ontological theories, the former gave the distinction between the true reality and illusion while the latter provided the existence of ten different kinds of beings.
Answer: the answer is 240=3c. So then when you divide, they spent 80$ per night. And to check your work, multiply 80 by the amount of nights they stayed. Should get $240