Supreme Furniture needs to purchase glass panes to make glass top coffee tables. Last year Supreme Furniture has two suppliers, Bobux and Twinkle, with the following supplier related information: 12 panes Cost per unit of Number of activities Number of activities Supplier related activities activity driver for Bobux for Twinkle Returning poor quality glass panes $120 per pane 25 panes Processing purchase orders $20 per order 12 orders 40 orders Receiving and inspecting deliveries $50 per delivery 15 deliveries 15 deliveries Supplier audit $1000 per audit 5 audits 2 audits Rework due to poor quality glass $100 per table 60 tables 15 tables Purchase price per glass pane $100 $150 Number of glass panes purchased 446 780 Calculate the supplier performance index of Bobux (round your answer to 2 decimal places)