You work for a small retail store. You must decide how many cases of kombucha to order. Twenty cases fit on a pallet and because of shipping costs, orders must be placed in multiples of 20. You can either order 20, 40, 60, 80, or 100 cases. Each case costs 15. If you order more than 1 pallet, you receive a discount of 5% per additional pallet ordered (2 pallets would be 5%, 3 would be 10%, etc) . The cases can be sold for 25 each. Any that are left unsold can be sold to a discount store for 10. Your records suggest that the probability that you will sell 25 cases is 20%, 45 cases is 45%, 65 cases is 20%, and 85 cases is 15%.