Answer:
<em>W:</em> positive contribution of 6,000
<em>Z:</em> positive contribution of 1,000
<em>X:</em> negative of 1,000
<em>Y:</em> negative of 6,500
Explanation:
value at the end- value at split off = value added for processing:
value added - addtional cost = advantage/disadvantage of processing
W (22,500- 7,500) - 9,000 = 15,000 - 9,000 = 6,000
X (20,000 - 13,5000) - 7,500 = 6,500 - 7,500 = (1,000)
Y (15,000 - 9,000) - 12,500 = 6,000 - 12,500 = (6,500)
Z (12,500 - 6,500) - 5,500 = 6,000 - 5,500 = 1,000
