Mathematics, 16.11.2019 15:31 damientran

Xcan do a job in 16 days and y can do the same jovb in 20 days x y and z can do the job in 7.5 days. alone z can do the same job in

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Xcan do a job in 16 days and y can do the same jovb in 20 days x y and z can do the job in 7.5 days....

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