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. Cannot be computed with the given information
C. 25%
D. 40%
E. 75%
Answer: E. 75%
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