Bob's brother, Steve, planned to visit over Labor Day weekend. Together they planned to build a deck in Bob's backyard. Bob ordered the lumber, concrete, nails, and other supplies to be delivered on Friday. He also contracted to rent a saw for the weekend (Sat., Sun., and Mon.) at a cost of $20 a day. When he went to pick up the saw, the store had rented it to someone else. He drove all over town trying to borrow another, but he could only get one for Sunday, Monday, and Tuesday at a cost of $50 per day. Because they couldn't work on Saturday without a saw, Bob had to hire Mac at a cost of $80 to work with him on Tuesday and, of course, Bob had to take off from work. Calculate the damages to which Bob is entitled from the rental company. Explain.