Birdies produces four different models of footwear (detailed production information is provided in table below). The operations manager knows that total monthly demand exceeds the capacity available for production. Demand next month is estimated to be 200 units of model Blackbird, 250 units of model Heron, 150 units of model Starling, and 225 units of model Hummingbird. Birdie operates only one 8-hour shift per day and is scheduled to work 20 days next month (no overtime). Further, each station requires a 10 percent capacity cushion. Product Station 1 Station 2 Station 3 Station 4 RM Price ($) ($) Blackbird 10 min Heron Starling 5 min 20 min 15 min 10 min 10 80 Hummingbird 5 min 20 min 15 min 5 min 10 min 5 min 10 min 10 95 20 min 8 90 10 min 5 70 The bottleneck utilization is % (enter response rounded to one decimal place).