charge made for carrying an account or for merchandise sold on an installment plan

the opportunity cost of unproductive assets; the expense incurred by ownership

the opportunity cost of unproductive assets; the expense incurred by ownership

the act of performing; of doing something successfully; using knowledge as distinguished from merely possessing it

the act of accomplishing some aim or executing some order

the act of performing; of doing something successfully; using knowledge as distinguished from merely possessing it