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OpenStudy (anonymous):
Sophie and Simon are peeling a pile of potatoes for lunch in the cafeteria. Sophie can peel all the potatoes by herself in 45 minutes, while it would take Simon 30 minutes to do the job working alone. If Sophie and Simon work together to peel the potatoes, how long will it take them?
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OpenStudy (miss.rose):
45 - 30 = 15. So it would take them 15 minutes if they worked together. I hope I could help.
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