Aman is thrice as efficient as Bikash Aman started the work and worked for 6 days then he is re...........

Quantitative Aptitude ( CCS) Time and work

Aman is thrice as efficient as Bikash. Aman started the work and worked for 6 days then he is replaced by Bikash , he worked for 9 more days and they together finish 50% of the work. Find in how many days Bikash completed the work?

35 days

40 days

57 days

54 days

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Explanation:

Solution:
Aman : Bikash = 3 : 1
Total work = 27 work
Aman complete = 16 work/day
Bikash complete = 9 work /day
50% ===== 27
100% ====54
B alone take = 54/1 = 54 days