PennTech Corporation has been producing two precision bearings, components T79 and B81, for use in production in its central Pennsylvania plant. Data regarding these two components follow.

PennTech’s annual requirement for these components is 8,000 units of T79 and 11,000 units of B81. Recently, management decided to devote additional machine time to other product lines, leaving only 41,000 machine hours per year for producing the bearings. An outside company has offered to sell PennTech its annual supply of bearings at prices of $33.75 for T79 and $40.50 for B81. Management wants to schedule the otherwise idle 41,000 machine hours to produce bearings so that the firm can minimize costs (maximize net benefits).

Required:
1. Compute the net benefit (loss) per machine hour that would result if PennTech Corporation accepts the supplier’s offer of $40.50 per unit for component B81.
2. Choose the correct answer. PennTech Corporation will maximize its net benefits by:
a. Purchasing 4,800 units of T79 and manufacturing the remaining bearings.
b. Purchasing 8,000 units of T79 and manufacturing 11,000 units of B81.
c. Purchasing 11,000 units of B81 and manufacturing 8,000 units of T79.
d. Purchasing 4,000 units of B81 and manufacturing the remaining bearings.
e. Purchasing and manufacturing some amounts other than those given above.
3. Suppose management has decided to drop product T79. Independently of requirements (1) and (2), assume that the company’s idle capacity of 41,000 machine hours has a traceable, avoidable annual fixed cost of $132,000, which will be incurred only if the capacity is used. Calculate the maximum price PennTech Corporation should pay a supplier for component B81.
(CMA,adapted)

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179 881 3.0 Machine hours required per unit Standard cost per unit: 2.5 Direct material Direct labor Manufacturing overhead S 6.75 12.00 $11.25 13.50 Variable Fixedt 6.00 11.25 $36.00 6.75 13.50 $45.00 Total Variable manufacturing overhead is applied on the basis of direct-labor hours. tFixed manufacturing overhead is applied on the basis of machine hours