<PRE><B>Question 946486</B>
unitary method involves the inverse variation equation of y = x/k


16 = number of days = y
25 = number of workers = x


equation of y = k/x becomes 16 = k/25.


solve for k to get k = 16 * 25 = 400


when you have 28 workers, the equation becomes y = 400 / 28 which simplifies to 100 / 7 days which is the same as 14 and 2/7 days.


it would take 28 workers 14 and 2/7 days working at the same rate per worker.


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