Working alone, Darryl can mop a warehouse in 11 hours. Elisa can mop the same warehouse in 9

1 answer:

3 0

Answer:

Step-by-step explanation:

Time needed if they work together:

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denpristay [2]

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Art [367]

Answer:

13.2/hour

Step-by-step explanation:

10% of 12 = 1.2

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LekaFEV [45]

I think because the angles are corresponding/opposite to each other u equate them to 180°

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