Answer:
$24
Explanation:
We can say the Optimal combination of inputs can be expressed as the ratio of marginal productivity of labor to the marginal productivity of capital is equal to the ratio of price of labor(wage) to the price of capital(RENT).
Lets denote:
marginal productivity of labor = MPL
marginal productivity of capital = MPC
Wage= W
Rent= R
Then the formula will be
[tex]\frac{MPL}{MPC}=\frac{W}{R}[/tex]
Workings:
Lets put in the values in the formula
[tex]\frac{15}{45} = \frac{8}{R}[/tex]
We have to find out R(Rent)
R= 8x3
R= $24