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?

Answer: Option A

Solution

Answer: Option A

Solution:

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