Asked by kelvin

9 men dig a farm for 5 days.How many days will 6 men take into finish the same farm?
Answered by Scott
9 * 5 = 45 man-days
... like man-hours, only longer

45 man-days / 6 men = ?
Answered by Steve
2/3 as many men, so 3/2 as much time.
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