15.Lazada Na, Company produced and sold 45,000 units of a single product last year, with the following results: Sales revenue P1,350,000 Manufacturing costs: Variable 580,000 Fixed 270,000 Selling costs: Variable 40,500 Fixed 54,000 Administrative costs: Variable 180,500 Fixed 110,000 Lazada's operating leverage factor was: 16. If Lazada's sales revenues increase 15%, what will be the percentage increase in income before income taxes