9) Zesty Tomato Company manufactures jam and ketchup. Sales price and cost data for both products follow: Sales price Variable manufacturing costs Sales commission (10%) Jam $20.00 12.00 2.00 Ketchup $42.00 20.00 4.20 The company has three sales representatives: Units Sold Jam Ketchup Paul Kowalski 2,000 750 Miriam Omer 2,520 650 May Sasaki 2,300 900 Calculate the total contribution margin and the contribution margin ratio for each sales representative