Suppose a bicycle manufacturer that uses heijunka has received
360 orders (180 units of model A, 90 units of model B, and 90 units
of model C) during the first quarter of this year. Suppose the
firm’s plant can work 4 weeks per month and 5 days per week,
manufacturing 120 units per week. Because the plant can produce 120
units per week, the firm has decided to operate its plant during
the first three weeks of April this year,...