Answer:
More capital.
Step-by-step explanation:
Per dollar of input addition of output:
= Value of Marginal Product of Labor ÷ price of input
Per dollar of input of capital adds to output:
= 30,000 ÷ 3,000
= 10
Per dollar of input of land adds to output:
= 4000 ÷ 2000
= 2
Per dollar of input of labor adds to output:
= 200 ÷ 100
= 2
A firm hires where it the per dollar addition to the output from each input is equal.
But here the addition from capital is higher than the land and labor, so the firm should hire more capital.