A , B and C can do a piece of work indiv...

A , B and C can do a piece of work individually in 8 , 12 and 15 days , respectively . A and B start working but A quits after working for 2 days. After this, C joins B till the completion of work. In how many days will the work be completed?

`5 (8)/(9) days `

`4 (6)/(7) days `

`6 (7)/(13 )days `

`3 (3)/(4) days `

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