[A]. 1 day 24
[B]. 7 day 24
[C]. 3 3 days 7
[D]. 4 days
✅ The correct answer is option C.
Formula: If A can do a piece of work in n days, then A’s 1 day’s work =
1
.
Formula: If A can do a piece of work in n days, then A’s 1 day’s work =
1
.
n
(A + B + C)’s 1 day’s work =
1
+
1
+
1
=
7
.
24
6
12
24
Formula: If A’s 1 day’s work =
1
,
then A can finish the work in n days.
n
So, all the three together will complete the job in
24
days
=
3
3
days.
7
7