Answer:
Contribution from special order $18,600
Explanation:
The relevant cash flows associated with the special order decision include:
Unit variable cost = variable manufacturing cost + shipping cost = 20+3= 23.
Note that the shipping cost is directly associated with the special order while the fixed cost is irrelevant. That is, whether or the special order is accepted the fixed cost would still be incurred.
So the analysis would look like this:
$
Sales revenue from special order(3,720 × 28) = 104,160
Variable cost of order (3,720 × 23) = (85560 )
Contribution from special order 18,600