A can do a piece of work in 18 days, B in 20 days and C in 30 days. B and C started work together but had to leave after 4 days. In how many days can A complete the work?

A can do a piece of work in 18 days, B in 20 days and C in 30 days. B

1.	A can do a piece of work in 18 days, B in 20 days and C in 30 days. B and C started work together but had to leave after 4 days. In how many days can A complete the work?
A.	12
B.	6
C.	16
D.	8
Answer» B. 6

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A can do a piece of work in 18 days, B in 20 days and C in 30 days. B and C started work together but had to leave after 4 days. In how many days can A complete the work?

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