Azuki Corporation operates in two sales territories, Urban and Rural. Data concerning last year's operations appear below: - Sales Variable expenses Contribution margin Traceable fixed expenses Segment margin Urban Rural $320,000 $80,000 208,000 56,000 112,000 24,000 48,000 30,000 $ 64,000 $(6,000) Azuki's common fixed expenses were $25,000 last year. If Urban sales were 10% higher last year, by approximately how much would Azuki's net operating income have increased? (Assume no change in selling prices, un total fixed expenses.)