A work center assigns tasks to 7 work stations. The total of all the task times is 13.7. If the cycle time used is 2.3, what is the efficiency of this configuration? (Round your answer to 1 decimal places.) Efficiency % Assign ratings based on closeness for each pairs of departments to develop a Muther-type grid so that these conditions are satisfied: 1 close to 2, 5 close to 2 and 6,2 close to 5, and 3 not close to 1 or 2. Use the letters A, O, and X. Assume that any pair of combinations not mentioned have an O rating. Pairs of departments 1-2 Closeness ratings 1-3 1-4 1-5 1-6 2-3 2-4 2-5 2-6 3-4 3-5 3-6 4-5 4-6 5-6