4 The Portland Division's operating data for the past two years is as follows Year 1 Year 2 5% 6% Return on investment Net operating income Turnover Margin $309,000 1,870,000 The Portland Division's margin in Year 2 was 150% of the margin for Year 1 The average operating assets for Year 2 were: $4,350,000 $5,150,000 $4,700,000 $4750000