Answer:
a) any cost lower than $2500 per unit
Step-by-step explanation:
total avoidable costs = ($300 * 10) + ($38,000 / 2) + $3,000 = $25,000
total number of navigation systems prodcued per month = 10
avoidable cost per navigation system = $25,000 / 10 = $2,500
this means that th e comapny could pay up to $2,500 per navigtion system provided by an extrenal supplier