Mathematics · Time and Work
There is a group of persons where each person has the same work efficiency. A piece of work is performed by this group as follows: on the first day only 1 person works, on the second day 2 persons work, on the third day 3 persons work, and this pattern continues such that K persons work on the Kth day. Following this pattern, they complete the work in 15 days. How many days would be required to complete the same work if 15 persons work together every day?
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