Solution :
Calculation of income from operations
Sales Region A Region B
Cost of goods sold 643,500 786,500
Selling expenses 244,500 298,900
Service department expenses 154,400 188,800
Purchasing (working note - 1) 108,090 132,110
Payroll accounting (working note - 2) 72,090 88,110
Income from expenses $ 64,420 $ 78,580
Working note 1
Allocation of purchasing expenses:
A region =
= $ 108,090
B region =
= $ 132,110
Working note 2
Allocation of payroll accounting expenses.
A region = 160200 x 0.45 (sales ratio)
= $ 72,090
B region = 160,200 x 0.55 (sales ratio)
= $ 88,110