Answer:
$5
Step-by-step explanation:
If Premier Co. incurs a unit-level cost of $490 per unit
Product design cost = $50000
Facility-level cost = $100000
No of units produced annually = 10000
Product design cost/unit = $50000/10000 = $5
Facility-level cost/unit = $100000/10000 = $10
Hence total production cost per unit = $490 + $5 + $10 = $505
However, the supplier is willing to produce the bench at $500 per unit
Thus avoidable production cost for 1 bench = $505 - $500 = $5