(A) 09 Days
(B) 10 Days
(C) 11 Days
(D) 12 Days
Correct Option is: A
John 1 days work = 3
Punter 1 day’s work = 1
John 1 day’s work : Punter 1 days work = 3:1
(John + Punter )’s 1 day’s work = 1/27
Divide 1/27 in the ratio 3:1
John 1 days work = 1/27 *3/1 = 3/27
=1/9
Hence John alone can finish the work in 9 days