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07-12-2016
Mathematics

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The time, t, in hours, that it takes x people to plant n trees varies directly with the number of trees, and inversely with the number of people. Suppose 6 people can plant 12 trees in 3 hours. How many people are needed to plant 28 trees in 5 hours and 15 minutes?

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10-12-2016

8 is the answer find the complex unit rate and then multiply

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