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OpenStudy (anonymous):
colin and his sister cathy are cleaning their house on saturday morning. Their house has nine rooms in it. They figure it takes one person about 8 mins to clean one room how long will it take them to clean the whole house if they work together the whole time? work MUST be shown
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OpenStudy (anonymous):
please help!
OpenStudy (anonymous):
U sure u can't do this?
OpenStudy (anonymous):
positive
OpenStudy (anonymous):
If it takes 1 person 8 minutes, then it should take 2 people together 4 minutes... 4x9 = 36, so it should take then 36 minutes (without breaks of course)
OpenStudy (anonymous):
If it took u 8 minutes to clean a room and your twin helped u wouldn't it take half the time?
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OpenStudy (anonymous):
ohhhh now i get it thanks (:
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