Edmonco Company produced and sold 48,500 units of a single product last year, with the following results: Sales Revenue Manufacturing costs: Variable Fixed $1,420,000 636,000 230,000 Selling costs: Variable 49,500 Fixed 65,000 Administrative costs: Variable 194,500 Fixed 110,000 If Edmonco's sales revenues increase 18%, what will be the percentage increase in income before income taxes