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One person cleans the room in 15 minutes. The other person cleans the same room in 30 minutes. If both of the people work together, how long will it take to clean the room?
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One person cleans the room in 15 minutes. The other person cleans the same room in 30 minutes. If both of the people work together, how long will it take to clean the room?
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Oct 7, 2020
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One person cleans the room in 15 minutes. The other person cleans the same room in 30 minutes. If both of the people work together, how long will it take to clean the room?
Mathematics
middle-school
Petko Kamenov
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Petko Kamenov
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Answer:
it will take about 11 minutes
Robin De Schepper
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Oct 12, 2020
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Robin De Schepper
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