Answer:
if your uncle is maximizing his profit, the value of the marginal product of the last worker he hired will be $12 while that of worker's marginal product will be $2 sandwiches per hour.
Explanation:
Marginal Revenue Product can be seen as the way in which additional revenue is been generated by additional workers.
Price =$6
Wage = $12
Since your enterprising uncle is hiring workers such that their wage is been equals the marginal revenue product.
Hence,
wage = Marginal revenue product
12 = 12
In a situation where the marginal revenue product is 12 then the marginal product will be:
Marginal Revenue Product = Price x MP
MP = Marginal Revenue Product / Price
MP = 12 / 6
MP = 2
Therefore if your uncle is maximizing his profit, the value of the marginal product of the last worker he hired will be $12 while that of worker's marginal product will be $2 sandwiches per hour.