What is D?

The three-station work cell at Pullman Mfg., Inc. is illustrated in the figure below. It has two machines at station 1 in parallel (i.e., the product needs to go through only one of the two machines before proceeding to station 2). 30 min/unit Station 1 Machine A Station 2 Station 3 10 min/unit Station 1 Machine B 2 min/unit 30 min/unit a) The throughput time is 42 minutes (enter your response as a whole number). b) The bottleneck time of this work cell is 15 minutes per unit (enter your response as a whole number). c) Station 1 is the bottleneck station. d) If the firm operates 10 hours per day, 6 days per week, the weekly capacity of this work cell is units (enter your response as a whole number)