b.If 100 identical firms are in the market,what is the industry supply curve? For 100 firms with identical cost structures.the market supply curve is the horizontal summation ofeach firm's output at each price. 800b. If 100 identical firms are in the market, what is the industry supply curve? For 100 firms with identical cost structures, the market supply curve is the horizontal summation of each firm’s output at each price. 800 60 Q P S