SOLUTION: Jane can paint a room in a new house in 15 hours. Together with her trainee, they can paint the room in 12 hours. How many hours would it take the trainee working by herself to do
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-> SOLUTION: Jane can paint a room in a new house in 15 hours. Together with her trainee, they can paint the room in 12 hours. How many hours would it take the trainee working by herself to do
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Question 941634: Jane can paint a room in a new house in 15 hours. Together with her trainee, they can paint the room in 12 hours. How many hours would it take the trainee working by herself to do the job? Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! r = w/t
rate of trainee = 1/x
rates are additive:
1/15 + 1/x = 1/12
1/x = 1/12 - 1/15
x = 1/(1/12 - 1/15)
x = 60 hours
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