Salvadore Inc., a local retailer, has provided the following data for the month of September:

Merchandise inventory, beginning balance	$ 46,800
Merchandise inventory, ending balance	$ 45,000
Sales	$265,200
Purchases of merchandise inventory	$133,100
Selling expense	$ 24,900
Administrative expense	$ 54,700

The net operating income for September was:

	$50,700
	$132,100
	$46,900
	$133,100