lShannon Company segments its income statement into its North and South Divisions. The company's overall sales, contribution margin ratio, and net operating income are $1,140,000, 46%, and $22,800, respectively. The North Division's contribution margin and contribution margin ratio are $190,000 and 50%, respectively. The South Division's segment margin is $212,800. The company has $319,200 of common fixed expenses that cannot be traced to either division.