You have just determined that the actual number of workstations that will be used on an assembly line is 6, using assembly line balancing. The takt time of the line is 5 minutes per unit, the required output per day is 120 units, and the sum of all the task times on the line is 25 minutes. What is the assembly line efficiency?

The assembly line efficiency is 4.17% (to 2 decimal places)

Explanation:

Efficiency is a measure of productivity that is used to determine how well a target is achieved, by finding the ratio of the actual output to the expected output. In this example, the number of units is the output of the assembly line, and the assembly line efficiency is calculated as follows:

Assembly line efficiency = (actual output) /(required output) × 100

actual output = 25 minutes

if 5 minutes = 1 unit

∴ 25 minutes = 1/5 × 25 = 5 units

∴ actual output = 5 units

required output = 120 units

∴ efficiency =

= 4.17%

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