Answer:
the minimum price it should charge is $40 per unit.
Step-by-step explanation:
Minimum Transfer Price = Variable Costs - Internal Savings + Opportunity Cost
Note : Division A has capacity available to meet B's requirements therefore there is no opportunity cost.
There are Internal savings of $5 as A's variable costs will be $5 less per unit.
Minimum Transfer Price = $45 - $5
= $40