Suns Bakery bakes fresh breads every morning. Each wheat bread is priced to sell at 100 baiza per unit, and its cost is constant at 70 baiza per unit. Each unsold unit has a salvage value of 20 baiza. Demand is expected to range between 35 and 40 units. The daily demand for its wheat bread is a random variable with distribution, based on the past experience, the probabilities are as shown below:

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