Answer: 10000 units
Step-by-step explanation:
First, we've to determine the equilibrium price which will be gotten when we equate the demand to the supply which will be:
20000 - 100P = 100P
100P + 100P = 20000
200P = 20000
P = 20000/200
P = 100
Since Q = 100P
Q = 100 × 100
Q = 10000
The competitive firm will produce 10000 units to maximize profit.