At the consulting agency, they recognized that water/ wastewater customers fall under different segments. Each segment support different characteristic s that influence the service accessible to them and the price for these services. . for simplification, these segments have been grouped into two categories. Commercial and residential customers. Each segment has different rates the commercial customers have the demand curve of d1=3500-125p1, While resident customers have a demand of d2= 8000-50p2. The water waste operation cost is c=$2 per unit gallon. What is the total profit of differential pricing?