1.

A, B and C can do apiece of work in 36 days, 54 days and 108 days, respectively. They started the work together but a left 9 days after the start of the work and B left 3 days before the work was completed. For how many days did C work?

A. 29
B. 33
C. 30
D. 31
Answer» B. 33


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