10. Selected financial information for Brookeville Manufacturing for the years of 2014 and 2015 are presented in the following table (000s omitted). Sales revenue 4,000 Purchases of direct materials 400 Direct labor 450 Manufacturing overhead 620 Operating expenses 650 Raw materials inventory, Dec 31, 2014 200 Raw materials inventory, Dec 31, 2015 180 Work in process inventory, Dec 31, 2014 320 Work in process inventory , Dec 31, 2015 410 Finished goods inventory, Dec 31, 2014 250 Finished goods inventory, Dec 31, 2015 200 What was the operating income