A takes 4 times as much time as B or 5 times as much time as C to finish a piece of work. Working together, they can finish the work in 4 days. B can do the work alone in:
A. 10 days
B. 15 days
C. 12 days
D. 20 days
Answer: Option A
Solution (By Examveda Team)
Efficiency of A : B : C = 1 : 4 : 5Total work = 4(A + B + C) = 4 × 10 = 40
B can do alone work in = $$\frac{{40}}{4}$$ = 10 days
This Question Belongs to Arithmetic Ability >> Time And Work
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