The Portland Division's operating data for the past two years is as follows: Year 1 Year 2 15% 8% ?$750,000 Return on investment Net operating income Turnover Margin Sales 2 $1,990,000 The Portland Division's margin in Year 2 was 150% of the margin for Year 1. The average operating assets for Year 2 were: O $4,550,00o $4,200,0o0 O $5,000,00o O $4,600,0oo