Castner Corporation is considering implementation of a JIT inventory system. The companys industrial engineer recently conducted a study to determine the average number of days spent in each activity of the production process. The following table summarizes her findings: Production Activity Number of Days Inspecting materials 3 Storing materials 17 Moving materials into production 3 Setting up production equipment 2 Cutting materials 6 Bending materials 5 Assembling finished products 9 Painting finished products 5 Instructions c. Calculate Castner's total cycle time. d. Determine Castner's manufacturing efficiency ratio.