Solution and Explanation:
(a) profit at 3,000 units at Boston: Revenues = 3,000 multiply 300 = $900,000
annual fixed costs = 70,000 transport = 60 multiply 3,000 = 180,000 labour/material = 600,000. Total costs = 850,000
Profit = 900,000 - 850,000 = $50,000
profit at Chicago: Revenues = 3,000 multiply 300 = $900,000
annual fixed costs = 90,000 transport = 40 multiply 3,000 = 120,000 labour and material = 170 multiply 3,000 = 510,000. Total costs = 720,000
Profit = 900,000 minus 720,000 = $180,000
(b) as the revenue per unit is same, profits will be equal when costs are equal. Assuming the volume to be x units.
Costing at boston = 70,000 plus 60x plus200x = 70,000 plus 260x
Costing at chicago = 90,000 plus 40x plus 170x = 90,000 plus 210x
Now 70,000 plus 260x = 90,000 plus 210x
20,000 = 50x or x = 400 units