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10 March, 04:47

If charlene brewster has times of 8.4, 8.6, 8.3, 8.5, 8.7 ans 8.5 and a performance rating of 110% percent, what is the normal time for this operation? is she faster or slower then normal?

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  1. 10 March, 08:31
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    First we define Charlene's the average time, which is (8.4 + 8.6 + 8.3 + 8.5 + 8.7 + 8.5) / 6 = 8.5. Normal time is 8.5/1.1 = 7.7. Charlene is faster than normal.
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