SOLUTION: I think this is the right category... The average length of time that 3 lawn service mowers operate on a given day is 930 minutes. None of the mowers operates for less than 900 mi

Question 435904: I think this is the right category...
The average length of time that 3 lawn service mowers operate on a given day is 930 minutes. None of the mowers operates for less than 900 minutes. What is the greatest possible length of time any of the mowers operates?
I am having difficulty figuring out how to set this one up.
930 = [a + b + c] / 3
?
I am returning to algebra after many years of absence. I am now required to pass a test soon. I have other questions as well.
Thank you
mrerek

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The average length of time that 3 lawn service mowers operate on a given day is 930 minutes. None of the mowers operates for less than 900 minutes. What is the greatest possible length of time any of the mowers operates?
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If one is the max, it occurs when the other 2 are a minimum
The total is 3*930 = 2790 minutes
900 + 900 + Max = 2790
Max = 990 minutes

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