SOLUTION: Alex can pour concrete on a walkway in x hours alone while Andy can pour concrete on the same walkway in two more hours than Alex . problem:how fast can they pour concrete on the w

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Question 901197: Alex can pour concrete on a walkway in x hours alone while Andy can pour concrete on the same walkway in two more hours than Alex . problem:how fast can they pour concrete on the walkway if they work together?

Answer by richwmiller(17219) About Me  (Show Source):
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