Answer:
The marginal product for the third worker is 150 packets
Step-by-step explanation:
Marginal product is the change in the output of a firm as a result of an additional input or factor of production. These additional inputs may include materials, labor etc.
The Marginal product for the third worker can therefore be calculated as
change in Total product / change in labour
change in total product = New packets of senior portrait - old packets of senior portraits ( 600 - 450) = 150
change in labour ( 3 - 2 ) = 1
150/1 = 150 packets