App Logo

No.1 PSC Learning App

1M+ Downloads
A, B, C can together complete the work in 12 days. If A is thrice faster than B, and B is twice faster than C, B alone can do the work in:

A24 days

B48 days

C54 days

D42 days

Answer:

C. 54 days

Read Explanation:

Let the efficiency of C be x, then Efficiency of A = 6x Efficiency of B = 2x Efficiency ratio of A, B and C = 6 : 2 : 1 Total work = 12 × (6 + 2 + 1) = 12 × 9 = 108 B alone can complete the whole task in = 108/2 = 54 days


Related Questions:

18 ആളുകള്‍ 36 ദിവസം കൊണ്ട് ചെയ്തു തീര്‍ക്കുന്ന ഒരു ജോലി 12 ആളുകള്‍ എത്ര ദിവസം കൊണ്ട് ചെയ്ത് തീര്‍ക്കും ?
A and B can do a work together in 18 days. A is three times as efficient as B. In how many days can B alone complete the work?
If John can complete a job in 8 hours and Sara can complete the same job in 12 hours how long will it take them to complete the job together ?
Pravin can do a piece of work in 6 hours. Rishi can do it in 28 hours. With the assistance of Shan, they completed the work in 4 hours. In how many hours can Shan alone do it?
A alone can complete a work in 14 days and B alone can complete the same work in 21 days. A and B start the work together but A leaves the work after 4 days of the starting of work. In how many days B will complete the remaining work?