CMA Intermediate · Operations Management and Strategic Management · Simulation and Line Balancing
A line has a cycle time of 5 minutes and total task time of 18 minutes per unit. Using the minimum whole number of workstations, what is the balance efficiency?
Balance efficiency is 90%. The minimum stations are 18 divided by 5, which is 3.6, rounded up to 4. Efficiency equals 18 divided by 4 times 5, that is 18 divided by 20, giving 90 percent.
- A90%Correct
- B72%
- C100%
- D80%
Explanation
Minimum stations = 18/5 = 3.6, rounded up to 4. Efficiency = total task time / (stations x cycle time) = 18/(4x5) = 18/20 = 90%. 72% wrongly uses 5 stations (18/25).
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