Three friends A, B, C started working together on a piece of work. Once half of the work was completed B left the work and then A and C complete the remaining work together in 10 days. If B had worked with A and C together only for 6 days, then in how many days B alone can complete the piece of work?

Three friends A, B, C started working together on a piece of work. Onc

1.	Three friends A, B, C started working together on a piece of work. Once half of the work was completed B left the work and then A and C complete the remaining work together in 10 days. If B had worked with A and C together only for 6 days, then in how many days B alone can complete the piece of work?
A.	25 days
B.	40 days
C.	30 days
D.	20 days
E.	Can't be determined
Answer» D. 20 days

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