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 $ 320,000 208,000 112,000 48,000 $ 64,000 Rural $ 80,000 56,000 24,000 3 30,000 $ (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, unit variable expenses, or total fixed expenses)