If A and B together can complete a piece of work in 20 days, B and C in 10 days and C and A in 12 days, then A, B and C together can complete the same work in :
If A and B together can complete a piece of work in 20 days, B and C in 10 days and C and A in 12 days, then A, B and C together can complete the same work in :
[A]
[B]
[C]
[D]
(A + B)’s 1 day’s work
(B + C)’s 1 day’s work
(C + A)’s 1 day’s work
On adding,
2(A + B + C)’s 1 day’s work
∴ (A + B + C)’s 1 day’s work
∴ Hence, the work will be completed in 
Hence option [C] is correct answer.
