Answer:
the costs of producing the parts is $12,000 less than buying them from an outside vendor
Step-by-step explanation:
production costs (60,000 units)
variable $2.30 per unit
fixed (avoidable) $1 per unit
fixed (unavoidable) $0.75 per unit
total $4.05 per unit
price from outside supplier $3.50 per unit
total incremental cost of buying from outside supplier = (60,000 x $3.50) + (60,000 x $0.75) = $210,000 + $45,000 = $255,000
production costs to manufacture = 60,000 x $4.05 = $243,000
the costs of producing the parts is $12,000 less than buying them from an outside vendor