Answer:
It will be a minimun of $5 wich are the variable cost for the product N°65
Step-by-step explanation:
Gorski has excess capacity. His plant do not generate additional fixed cost for taking the order or reject local transactions.
It can accept for their variable cost of$5 or above. This is the relevant cost for the transactions
Accepting for less, will generate a loss, as it is not paying their variable cost
Acception for more, will generate addtional gains
$5 is the indifference point at which is the same to produce or not produce.