A takes twice as much time as B or thrice as much time as C to finish a piece of work Working together, they can finis the work Working together , they can finish teh work in 2 days . B can do the work alone in -

A 4 days
B 8 days
C 6 days
D 12 days

Correct Answer: 6 days

Let, A = 6x B = 3x C = 2x ATQ, 16x + 13x + 12x = 12⇒1 + 2 + 36x = 12⇒66x = 12.'. x = 2B Can do the work 3x = 3×2 = 6 days 
Bissoy MCQ
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