SOLUTION: Janet can wax her car in 8hrs. When she works together with Helga, they can wax the car in 30 mins. How long would it take Helga, working by herself, to wax the car?
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Question 865676: Janet can wax her car in 8hrs. When she works together with Helga, they can wax the car in 30 mins. How long would it take Helga, working by herself, to wax the car?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1/8+1/h=1/.5
h = 0.533333 hours
about 32 minutes
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