Marlinski had the following data (in thousands) for a given period. Assume there are no inventories.

Direct labour ...................................................................$170
Direct materials .................................................................210
Variable factory overhead ...............................................110
Contribution margin .........................................................200
Fixed selling and administrative expenses ....................100
Operating income ...............................................................10
Sales .....................................................................................970

Compute (1) the variable manufacturing cost of goods sold, (2) the variable selling and administrative expenses, and (3) the fixed factory overhead.