The direct cost of each hotel guest at Seaview hotel is $15 per night. The hotel manager has estimated that the average overhead cost per guest is $10 per night, based on 100 guest nights per week. The room price is $50 per night. A large group of 50 people have asked to spend one night at the hotel during a week when only 30 other guests are booked. The group of 50 has offered to pay a price of $20 each. Discuss whether the manager should accept the offer.