Abu Dhabi manufacturer has supplied the following data: Boxes of tiles produced and sold Sales revenue..... Variable manufacturing expense.. Fixed manufacturing expense Variable selling and administrative expense. Fixed selling and administrative expense. Net operating income. 520,000 $2,132,000 $650,000 $464,000 $260,000 $312,000 $446,000 (a) What is the company's unit contribution margin? Show the workings (3 marks) Answer: (b) Calculate The company's contribution margin ratio: (3 marks) Answer: (c) If the company increases its unit sales volume by 3% without increasing its fixed expenses, then total net operating income should be closest to: show workings (4 marks)