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Two machines can do a work in 5 hours and two workers can do the same work in 80 days working 8 hours in a day. Who or which is faster and by how many hours?(iOM'11)

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Two machines can do a work in 5 hours and two workers can do the same work in 80 days working 8 hours in a day. Who or which is faster and by how many hours?(iOM'11)






 
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