The following data (in thousands of dollars) have been taken from the accounting records of Karling Corporation for the just completed year.

Sales	$990
Raw materials inventory, beginning	$40
Raw materials inventory, ending	$70
Purchases of raw materials	$120
Direct labour	$200
Manufacturing overhead	$230
Administrative expenses	$150
Selling expenses	$140
Work in process inventory, beginning	$70
Work in process inventory, ending	$50
Finished goods inventory, beginning	$120
Finished goods inventory, ending	$160

The cost of the raw materials used in production during the year (in thousands of dollars) was: