A can di a work in 40 days. He worked at it for 8 days and then b finished it in 16 days. How long will they together take to complete the work?
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1/8+1/16=1/x+1/40
=4+2/32=1/x+1/40
=3/16-1/40=1/x
=5-2/80=1/x
therefore x=26days
=4+2/32=1/x+1/40
=3/16-1/40=1/x
=5-2/80=1/x
therefore x=26days
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