A. Practice Problems The supply and demand schedules below show hypothetical prices and quantities in the market for corn. The initial quantity supplied is shown by Qs, and the quantity demanded is Qa. The Market for Corn (in millions of bushels) Price Qa Qs $6.00 220 400 $5.50 240 360 $5:00 260 320 111 1 1 1 1 2 $4.50 280 280 $4.00 300 240 $3.50 320 200 $3.00 340 160 Harcourt Brace & Company 4-6