A production center is available for 8 hours a day in a factory.It is comprised of several rotary parts,and the worker operating it is required to lubricate these rotary parts regularly each day.It takes 2 hours to remove these parts from the production center,lubricate them,and re-assemble them.The production center is not available for production during these times.The availability of the production center is:
A)50%
B)75%
C)40%
D)25%
E)Cannot be computed with the given information

Question

Quizplus · Accepted Answer

The production center is available for 8 hours a day, but it takes 2 hours to remove, lubricate, and re-assemble the rotary parts, so the production center is not available for 2 hours each day. This means that the production center is available for 8 - 2 = 6 hours each day. Therefore, the availability of the production center is:

6/8 * 100% = 75%

Therefore, the best choice is option B.

A Production Center Is Available for 8 Hours a Day