The marginal revenue product of the second worker is $150.
Explanation:
This is because when we change from 1 worker to 2 workers, the total product increases by 30 (from 20 when there were 1 worker to 50 when there wew 2 workers).
The value of this extra product, considering that the price of every T-shirt is $5 (marginal revenue of this product) equals [tex]30\times\$5=\$150[/tex].
This is additional value in dollars that the company has because incuding an extra employee when it changes from oneto two employees.
