Answer:
$40,000 increase
Explanation:
Note: The data in the question are merged together and they are first sorted before answering the question as follows:
Before the change After the change
Total annual sales $1,200,000 $1,600,000
Costs as percentage of sales:
Direct materials 23% 20%
Direct labor 9% 7%
Manufacturing Support costs 18% 13%
Now, the explanation to the answer is as follows:
Direct materials before = $1,200,000 * 23% = $276,000
Direct labor before = $1,200,000 * 9% = $108,000
Manufacturing support costs before = $1,200,000 * 18% = $216,000
Total cost before the change = $600,000
Direct materials after = $1,600,000 * 20% = $320,000
Direct labor before = $1,600,000 * 7% = $112,000
Manufacturing support costs before = $1,600,000 * 13% = $208,000
Total cost after the change = $640,000
Incremental manufacturing costs = Total cost after the change - Total cost before the change = $640,000 - $600,000 = $40,000 increase