The following information relates to lancashire manufacturing: to produce a unit of product: mixing department 3 minutes per unit molding department 5 minutes per unit casting department 7 minutes per unit finishing department 4 minutes per unit there is a wait time of 8 minutes before the mixing department begins a batch, 5 minutes between the mixing and molding departments, a move and pre-wait between molding and casting of 10 minutes, and a move and pre-wait between the casting and finishing departments of 12 minutes. what is the production rate?