Please help me with this question, i will like and comment

2. David buys fruits and vegetables wholesale and retails them at David's Produce on La Vista Road. One of the difficult decisions is the amount of bananas to buy. Let us make some simplifying assumptions, and assume that David purchases bananas once a week at 20 cents per pound and retails them at 50 cents per pound during the week. Bananas that are more than a week old are too ripe to sell and David will pay workers to take them away. It costs 2 cent to get rid of each pound of unsold bananas. Suppose that the weekly demand for bananas is uniformly distributed between 500 and 1500 pounds. (a) David wants to order a quantity which would be large enough to ensure with 0.58 probability that he can fulfill all demand. How many should he order? (b) Find the newsvendor ratio and the optimal ordering quantity. (c) Assuming you order the amount you found in part (b), calculate the expected amount of shortage, the expected amount of leftover quantity, and the expected amount of sold quantity. (d) If you order the amount you found in part (b), what is the erpected weekly profit