please help??

A distributor is negotiating a supply contract for one of its item. The end-customer demand is forecasted as follows: Demand Probability 0.4 Quantity 20,000 30,000 45,000 60,000 0.2 0.35 0.05 The current parameters are as follows: Price charged by distributor to end-customer Price charged by supplier to distributor Buyback price offered by supplier Salvage value Fixed manufacturing cost Variable manufacturing cost $100/unit $70/unit $40/unit $10/unit $45/unit What is the optimal order quantity for the distributor under the buyback contract? A distributor is negotiating a supply contract for one of its item. The end-customer demand is forecasted as follows: Probability Demand Quantity 20,000 30,000 45,000 60,000 0.4 0.2 0.35 0.05 The current parameters are as follows: Price charged by distributor to end-customer Price charged by supplier to distributor Buyback price offered by supplier Salvage value Fixed manufacturing cost Variable manufacturing cost $100/unit $70/unit $40/unit $10/unit $45/unit Assume the distributor order 45,000. What is the expected number of lost sales