Answer:
Net cost = $(120,000)
Explanation:
Division A is already operating at full capacity. This implies that it can sell all (60,000 units)l that it can produce. To preserve it current level of profit, any units sold to Division B would profitable provided it generates the same of amount of contribution currently earned.
Contribution earned from external sales = 25 - (13+3)= $9
Contribution earned from internal sales = 16- 13 = $3
Note that the variable market cost is not included in computing the contribution earned from internal sales because there wont be marketing cost.
Lost in contribution per unit from internal sales = $9- $3 = $6
Total loss = $6× 20,000 =($120,000).
Net cost = $120,000