SOLUTION: The time taken for a team of 8 workers to paint a building is 20 days. A similar building needs painting but must be completed within 15 days. What will be the minimum number of wo

Question 860560: The time taken for a team of 8 workers to paint a building is 20 days. A similar building needs painting but must be completed within 15 days. What will be the minimum number of workers needed to complete the task in the given time?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
By "similar" you really mean, "congruent", so same size and shape.

The rate for 1 worker in the first described group is 1 "paint the building" in days.

For a group of n workers, the work rate of this group is jobs per day. The basic idea of uniform rates for task completion or doing a job is R*t=j for Rate, time, job. Your question simply becomes , using units of days and job. n is the count of the workers needed in the group, and unknown which easily is solvable.
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