SOLUTION: this is really confusing.
arthur can wash a car in 30 minutes, Bonnie can wash a car in 40 minutes, and Claire can wash a car in 60 minutes. How will it take them to wash a car,
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Question 54544This question is from textbook McDougal Littell Algebra 1 concepts and skills
: this is really confusing.
arthur can wash a car in 30 minutes, Bonnie can wash a car in 40 minutes, and Claire can wash a car in 60 minutes. How will it take them to wash a car, working together?
so, i dont get how you organize all this and get an answer.
This question is from textbook McDougal Littell Algebra 1 concepts and skills
Answer by Nate(3500) (Show Source): You can put this solution on YOUR website!
Work: t/30
Work: t/40
Work: t/60
t/30 + t/40 + t/60 = 1
120t/30 + 120t/40 + 120t/60 = 120
4t + 3t + 2t = 120
9t = 120
t = 40/3 or About 13.33 hours
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