Question

A work can be completed by ‘A’ and ‘B’, alone in 14 days and 7 days, respectively. Find the number of days taken by ‘C’ to complete the same work alone if ‘A’, ‘B’ and ‘C’ together can complete the whole work in 2 days.

A 3.2 days
B 3.7 days
C 3.5 days
D 2.5 days
E None of these
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