brookecook03 brookecook03

19-04-2020
Mathematics

contestada

Sally can paint a room in 5 hours while it takes steve 7 hours. How long would it take them together?

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daquonallen4l daquonallen4l

19-04-2020

About 2 hours I believe

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DGBxBigxBrain DGBxBigxBrain

19-04-2020

Answer:

2.92 or 35/12

Step-by-step explanation:

Each hour sally does 1/5 and Steve does 1/7 1/5+1/7=12/35

each hour they do 12/35

So divide 1 by 12/35 to find how long it takes and you get

35/12 or ≈2.92

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