The TSB Company produces 8,000 skateboards each month, which…

The TSB Cоmpаny prоduces 8,000 skаtebоаrds each month, which it sells for $50 each. Variable costs are $15 per unit, and fixed costs are $90,000 per month.  A Canadian company has offered to buy an additional 1,000 skateboards for $20 each.  Assuming that normal sales volume and costs remain unchanged, filling this special order will cause TSB’s operating income to: