1. A manufacturer of small kitchen appliances has the following unit costs for labor and materials for three of its products: a blender, a mixer, and a food processor.
Blender Mixer Food Proc.
Labor $8.50 $5.50 $12.00
Materials $6.00 $4.00 $15.00
Furthermore, the quarterly demand for each appliance is summarized as follows.
1st Qtr 2nd Qtr 3rd Qtr 4th Qtr
Blender 1200 1500 1500 2000
Mixer 1200 1000 1000 1500
Food Proc 500 500 400 1000
Identify matrices and use their product to find the quarterly costs for labor and materials for these appliances. What are the first quarter's labor costs?