The Notley Company had the following data (in thousands) for a given period:

Sales .................................................................$700
Direct materials.................................................210
Direct labour......................................................150
Indirect manufacturing costs .........................170
Selling and administrative expenses .............150

There were no beginning or ending inventories. Compute (1) manufacturing cost of goods sold, (2) gross margin, (3) operating income, (4) prime cost, and (5) conversion cost.