Icy Delight Company, which manufactures quality ice cream sold at premium prices, uses a single production department. Production begins with the blending of various ingredients, which are added at the beginning of the process, and ends with the packaging of the ice cream. Packaging occurs when the mixture reaches the 90% stage of completion. The two-litre cartons are then transferred to the shipping department for shipment. Labour and overhead are added continuously throughout the process. Manufacturing overhead is applied on the basis of direct labour hours at the rate of $3 per hour.

Im not sure how to go about solving it when it talks about 90% completion stage, does that mean material 1 would be 90% completed and material 2 is then 95% completed?