To complete the first setup on a new machine took an employee 280 minutes. Using an 75% cumulative average−time learning curve indicates that the second setup on the new machine is expected to take .

A pattern in which the aggregate time per unit is lessened by a consistent rate each time the combined volume of parts produced is multiplied is called the cumulative average−time learning curve model.

The second setup on the new machine is expected to take 140 minutes.

This can be estimated by:

= 210

Let y = time required for the second setup then,

Therefore it will take 140 minutes for the second setup.

To learn more about the cumulative average−time learning curve follow the link:

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140 minutes

Explanation:

From the question, we are informed that to complete the first setup on a new machine took an employee 280 minutes. Using an 75% cumulative average−time learning curve indicates that the second setup on the new machine is expected to take:

We first multiply the 75% cumulative average−time by the 280 minutes used. This will be:

= 280 × 75%

= 280 × 0.75

= 210

(280 + y)/2 = 210

280 + y = 210 × 2

280 + y = 420

y = 420 - 280

y = 140 minutes

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