SOLUTION: It takes 10 hours for 5 people to paint 6 rooms. At the same rate, how long does it take for 3 people to paint 4 rooms? Please help.
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Question 1097566: It takes 10 hours for 5 people to paint 6 rooms. At the same rate, how long does it take for 3 people to paint 4 rooms? Please help. Answer by ikleyn(52781) (Show Source):
In the first case, the rate of work of one single worker is of the room per hour per worker
In the second case, the rate of work of one single worker is of the room per hour per worker.
(where x is unknown number of workers).
The rates are the same, which gives you an equation
= .
Solve for x: x = = = hours = hours.
