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Alli can mop Strong Hall in 10 hours. Working together, Alli and Zach mop Strong Hall in 4 hours. How long would it take Zach to do this job alone?

Alli can mop Strong Hall in 10 hours. Working together, Alli and Zach mop Strong Hall in 4 hours. How long would it take Zach to do this job alone?
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Alli can mop Strong Hall in 10 hours. Working together, Alli and Zach mop Strong Hall in 4 hours. How long would it take Zach to do this job alone?

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User Tdjfdjdj
by
8.5k points

1 Answer

4 votes

Answer:

8 hour

Explanation:

answered
User Marian Zagoruiko
by
8.9k points
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