Answer:
they should buy the sub assemblies
Explanation:
The costs per unit are as follows:
offer from an outside vendor = $17 per unit
non-avoidable fixed costs = $8 - $2 = $6
alternative 1 alternative 2 differential
keep producing purchase amount
purchase cost $0 $17 $17
avoidable costs $18 $0 ($18)
total $18 $17 ($1)
if the company decides to purchase the parts from an outside vendor it will save $1 per unit.