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X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they together take to complete the work?



X does 1/40 Of the work in 1 day 8 days-----8*1/40 work 8 days -----1/5 of the work completed. therefore Y does 4/5 Of the the work in 16 days 16 days ---4/5 1 day---4/5*16 1 day ----1/20 of work Y-----20 days Together--X+Y....1/40+1/20=3/40 Therefore,the work will be completed in 40/3 days
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