00:01
A profit maximizing monopolist faces a demand function given by q is equals to 1000 minus 20 p where p is the price of an output in dollars.
00:14
She has a constant marginal cost of $20 per unit of output.
00:23
Now in an effort to induce her to increase her output, the government agrees to pay for a subsidy of $10 for every unit that she produces.
00:43
So she will either increase her price, her lower output, decrease her price by $5 per unit, decrease her price by $10 per unit, decrease her price by more than $10 per unit but less than $16 or decrease her price by more than $16 per unit.
01:04
So q is 1000 minus 20 p so c is equal to 20 q because it's 20 times q.
01:13
So the profit maximizing outputs without subsidy, this is q is equals to 1000 minus 20 p.
01:35
P is equals to 1000 minus q over 20 and pi is equal to p times q minus c.
01:44
Pi is equals to 1000 minus q over 20 q minus 20 q.
01:53
So d pi over dq is equal to 50 minus 1 over 10 q minus 20.
02:05
Putting it equal to zero, we get zero is equals to 30 minus 1 over 10 q.
02:12
So q is equal to 300...