The first unit of a product took 80 work days.The learning curve is estimated to be 90%.The time for the fourth unit will be about ________ work days and the time for the first four units will be about ________ work days.(Use Table E.3)
A)51;250
B)250;51
C)65;285
D)51;cannot be determined
E)65;cannot be determined

Question

Quizplus · Accepted Answer

Using Table E.3 and the given 90% learning curve estimate, we can find the following:

- For the second unit, we multiply the time of the first unit by 0.9: 80 * 0.9 = 72 work days
- For the third unit, we multiply the time of the second unit by 0.9: 72 * 0.9 = 64.8 rounded to 65 work days
- For the fourth unit, we multiply the time of the third unit by 0.9: 65 * 0.9 = 58.5 rounded to 59 work days

To find the time for the first four units, we simply add the times together: 80 + 72 + 65 + 59 = 276 work days, which is closest to choice C of 285 work days. Therefore, the answer is C.

The First Unit of a Product Took 80 Work Days