Question

Parsons Plumbing & Heating manufactures thermostats that it uses in several of its products. Management is considering whether to continue manufacturing the thermostats or to buy them from an outside source. The following information is available:
1. The company needs 80,000 thermostats per year. Thermostats can be purchased from an outside supplier at a cost of $6 per unit.
2. The cost of manufacturing thermostats is $7.50 per unit, computed as follows:
irect materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $156,000
Direct labor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132,000
Manufacturing overhead:
Variable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168,000
Fixed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144,000
Total manufacturing costs. . . . . . . . . . . . . . . . $600,000
Cost per unit ($600,000 ÷ 80,000 units) . . . . . . . $7.50
3. Discontinuing the manufacture of the thermostats will eliminate all of the direct materials and direct labor costs but will eliminate only 60 percent of the variable overhead costs.
4. If the thermostats are purchased from an outside source, certain machinery used in the production process would no longer have to be leased. Accordingly, $9,200 of fixed overhead costs could be avoided. No other reductions will result from discontinuing production of the thermostats.

Instructions
a. Prepare a schedule to determine the incremental cost or benefit of buying thermostats from the outside supplier. On the basis of this schedule, would you recommend that the company manufacture thermostats or buy them from the outside source?
b. Assume that if thermostats are purchased from the outside source, the factory space previously used to produce thermostats can be used to manufacture an additional 6,000 heat flow regulators per year. These regulators have an estimated contribution margin of $18 per unit. The manufacture of the additional heat-flow regulators would have no effect on fixed overhead.
Would this new assumption change your recommendation as to whether to make or buy thermostats? In support of your conclusion, prepare a schedule showing the incremental cost or benefit of buying thermostats from the outside source and using the factory space to produce additional heat-flow regulators.



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  • CreatedApril 17, 2014
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