A and B can do a piece of work in 36 days, B and C can do a it in 60 days, A and C can do it in 45 days. C alone can do it in:
A and B can do a piece of work in 36 days, B and C can do a it in 60 days, A and C can do it in 45 days. C alone can do it in :
[A]90 days
[B]120 days
[C]150 days
[D]180 days
180 days
(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
∴ c’s 1 day’s work
∴ C alone will complete the work in 180 days.
Hence option [D] is correct answer.
PM
May 7, 2018 at 8:19 pmGood you know it