Mathematics, 05.10.2019 06:00 nataliamontirl8152

The first gardener can finish the job in 6 hours, and the second gardener can do the same job in 7 hours. how long it will take them to finish the same job, if they work together?

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The first gardener can finish the job in 6 hours, and the second gardener can do the same job in 7 h...

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