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08-11-2016
Mathematics

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Sarah can assemble a wideget in 8 hours. Jerry can do the same job in 12 hours. How much time would be required to assemble a widget if they worked together?

Sarah can assemble a wideget in 8 hours Jerry can do the same job in 12 hours How much time would be required to assemble a widget if they worked together class=

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08-11-2016

it would take 4 hours if they worked together

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