1.
Calculate the relevant
1.

Explanation of Solution
Calculate the relevant manufacturing cost per fan as follows:
Particulars | Amount ($) |
Electric motor | $6.00 |
Other parts | $8.00 |
Direct labor | $15.00 |
Variable manufacturing | $5.00 |
Relevant manufacturing cost per unit | $ 34.00 |
Table (1)
Working note (1):
Calculate the variable manufacturing overhead cost per unit.
Variable manufacturing overhead cost per unit}=(Total overhead cost per unit−(Total fixed costProduction fans))=($15 per unit−$100,00010,000 units)=$15 per unit−$10 per unit=$5 per unit
2.
Calculate the number of units that company should manufacture and purchase and calculate the contribution margin under optimum plan.
2.

Explanation of Solution
Calculate the number of units that company should manufacture and purchase and calculate the contribution margin under optimum plan as follows:
Particulars | Units |
Fans produced internally (current capacity) | 15,000 |
Less: Fans purchased from external supplier (20,000−15,000) | 5,000 |
Total sales volume (units) | 20,000 |
Table (1)
Total contribution margin under optimum plan.
Total contribution margin} =[(Current capacity×Contribution margin per unit (2) )+(Fans purchased from external supplier×Contribution margin per unit )]=[(15,000 unit ×$24)+(5,000 units×$12)]=$360,000+60,000=$420,000
Working note (2):
Calculate contribution margin per unit for current capacity (15,000 units).
Contribution margin per unit}=(Selling price per unit−Relevant cost per unit−Variable cost per unit)=$72−$34−$12=$24
3.
Calculate the total contribution margin from manufacturing and selling the marine pumps and state whether company should manufacture the pumps or not.
3.

Explanation of Solution
Calculate the total contribution margin from manufacturing and selling the marine pumps and state whether company should manufacture the pumps or not as follows:
Particulars | Amount ($) |
Selling price per unit | $ 60.00 |
Less: Variable cost per unit | |
Electric motor | $ 5.50 |
Other parts | $ 7.00 |
Direct labor @$15 per unit | $ 7.50 |
Manufacturing overhead (3) | $ 5.00 |
Selling and administrative costs (4) | $ 17.60 |
Contribution margin per unit | $ 17.40 |
Table (1)
Contribution margin = (Normal production×Contribution margin per unit)=25,000 units×$17.40 per unit=$435,000
In this case, total contribution margin from making pumps is more than the total contribution margin for making fans. Hence, company should produce the pumps.
Working note (3):
Calculate the variable overhead cost per marine pump.
Variable overheadcost per marine pump}=(Total overheade cost−Fixed overhead)Production capacity=$225,000−$100,00025,000 units=$5 per unit
Note: Total variable overhead cost is $225,000(25,000 pumps×$9 per unit)
Working note (4):
Calculate the variable selling/administrative cost per marine pump.
Variable selling/administrativecost per marine pump}=(Total selling\administrative cost−Fixed portion)Production capacity=$500,000−$60,00025,000 units=$17.60 per unit
Note: Total variable overhead cost is $500,000(25,000 pumps×$20 per unit)
4.
State the strategic factors that are related to company M’s decisions.
4.

Explanation of Solution
State the strategic factors that are related to company M’s decisions as follows:
- New market and customer benefits for other product line.
- Critical success factors related pumps and fans.
Market research of pump sales.- Positive and negative image for pump sales.
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Chapter 11 Solutions
COST MANAGEMENT: STRATEGIC W/CONNECT
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