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Mathematics, 27.09.2019 11:50 TVASALLO31

David can proofread 15 reports in an hour, while armando can proofread 37 reports in an hour. if they have 400 reports to proofread, how much time will it take between the two of them?

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David can proofread 15 reports in an hour, while armando can proofread 37 reports in an hour. if the...
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