A production center is available for 8 hours per day in a factory.It is comprised of several rotary parts,and the worker operating it is required to lubricate these rotary parts once each day.It takes 2 hours to remove these parts from the equipment,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)25%
D)Cannot be computed with the given information

Question

Quizplus · Accepted Answer

The production center is available for 8 hours a day. However, the lubrication of rotary parts takes 2 hours, so the production center will not be available for that 2 hours. Therefore, the actual production time for the production center is 8 - 2 = 6 hours per day. 
Percentage availability of the production center = (actual production time / total available time) x 100 
= (6 / 8) x 100 
= 75% 
Thus, the correct choice is B) 75%.

A Production Center Is Available for 8 Hours Per Day