B does 50% of a work in 20 days. C joins B and they together finish the remaining work in 4 days. C alone can do the whole work in ____ days.

B does 50% of a work in 20 days. C joins B and they together finish th

1.	B does 50% of a work in 20 days. C joins B and they together finish the remaining work in 4 days. C alone can do the whole work in ____ days.
A.	10
B.	8
C.	12
D.	9
Answer» B. 8

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B does 50% of a work in 20 days. C joins B and they together finish the remaining work in 4 days. C alone can do the whole work in ____ days.

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