A and B can do a piece of work in 18 days. B and C together can do it in 30 days. If A is twice as good a workman as C, find the how many days B alone can do the work?
A. 90 days
B. 100 days
C. 80 days
D. 75 days
Answer: Option A
Solution (By Examveda Team)

A : C = 2 : 1
A = 4 unit
C = 2 unit
B = 1 unit
B = $$\frac{{90}}{1}$$ = 90 days

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