The Medina and Haley Dental Clinic provides both preventive and orthodontic dental services. The two owners, Martin Medina and Cybil Haley, operate the clinic as two separate investment centres: preventive services and orthodontic services. Each owner is in charge of one centre: Martin for preventive services and Cybil for orthodontic services. Each month they prepare an income statement on the two centres to evaluate performance and make decisions about how to improve the clinic's operational efficiency and profitability.

Recently, they have been concerned about the profitability of the preventive services operations. For several months, the centre has been reporting a loss. In addition, the owners know that the investment in operating assets at the beginning of the month was $102,400, and it was $97,600 at the end of the month. They have asked for you to evaluate their current performance reporting system. Shown below is the responsibility report for the month of May 2016:

Instructions
(a) Prepare a responsibility report for an investment centre as illustrated in the chapter.
(b) Write a memo to the owners in which you discuss the weaknesses of their current reporting system.

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Actual $45,000 Difference from Bud ge Service revenue Variable costs $2,000 F Filling materials Novocaine Supplies Dental assistant wages Utilities 7,000 4,000 2,000 2,500 500 16,000 300 U 200 U 250 F 50 U 300 U Total variable costs Fixed costs Allocated portion of receptionist's salary Dentist salary Equipment depreciation Allocated portion of building depreciation 3,000 12,000 6,000 15,000 36,000 s (7,000) 200 U 600 U 1,000 U 1,800 U 100 U Total fixed costs Operating income (loss)