Efficiency in combining work rates of men and women to complete a job more quickly.
Efficiency in completing a job requires understanding the combined work rates of individuals. In this case, 8 men or 12 women finish a job in 25 days. To determine the time for 6 men and 11 women, calculate their combined work rates.
8 men = 12 women in efficiency. So, 6 men would equal 9 women in efficiency. Combining this with the 11 women gives a total of 20 women, completing the job in less time than 25 days due to the higher combined work rate.
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