|A) 18 days||B) 24 days|
|C) 30 days||D) 36 days|
2(A+B+C)'s 1 day work =
=>(A+B+C)'s 1 day's work=
work done by A,B and C in 10 days=
A's 1 day's work =
Now, work is done by A in 1 day.
So, work wil be done by A in = 18 days