SOLUTION: one painter can paint 2 rooms in 90 minutes. if there are 50 rooms how many painters are needed to paint all rooms in 7.5 hours.
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Question 358183: one painter can paint 2 rooms in 90 minutes. if there are 50 rooms how many painters are needed to paint all rooms in 7.5 hours. Answer by Edwin McCravy(20056) (Show Source):
You can put this solution on YOUR website! one painter can paint 2 rooms in 90 minutes. if there are 50 rooms how many
painters are needed to paint all rooms in 7.5 hours.
1 painter's rate = rooms/hour
n painters' combined rate = n rooms/hour
rooms = rate * time
50 = n * 7.5
Multiply through by 3
150 = 4n*7.5
150 = 30n
5 = n
It would take 5 painters.
Edwin
