Potato farming (like farming of most agricultural products) is highly competitive. Price is determined by demand and supply. Based on Department of Agriculture statistics, U.S. demand for potatoes is estimated to be Q_D= 184 - 20P, where P is the farmer's wholesale price (per 100 pounds) and Q_Dis consumption of potatoes per capita (in pounds). In turn, industry supply is Q_S= 124 + 4P. Find the competitive market price and output (i.e. equilibrium condition).