4 . Total economic surplus The following diagram shows supply and demand in the market for tablets. Use the black point (plus symbol) to indicate the equilibrium price and quantity of tablets. Then use the green point (triangle symbol) to fill the area representing consumer surplus, and use the purple point (diamond symbol) to fill the area representing producer surplus. Demand 300 -+ 270 Equilibrium 240 A 210 180 Consumer Surplus 150 O PRICE (Dollars per tablet) 120 Producer Surplus 90 Supply 20 25 50 75 100 125 150 175 200 225 250 QUANTITY (Millions of tablets) Total surplus in this market is $ million