Working on some practice questions and not sure what equation to use to solve.

Flora Flowers orders flowers every day from a large wholesaler. She pays $3.00 a bunch and after arranging them, sells them for $15.00 an arrangement. Flora has estimated demand and probabilities with the table below.

Demand	Probability
25	0.15
50	0.25
75	0.35
100	0.20
125	0.05

If Flora's goal is to maximize expected daily profit, what would Flora's profit be, in the long run with the order size of 75?