8.
|
A pump can fill a tank with water in 2 hours. Because of a leak, it took 2 hours to fill the tank. The leak can drain all the water of the tank in:
|
A.
|
|
B.
|
7 hours
|
C.
|
8 hours
|
D.
|
14 hours
|
|
Answer: Option D
Explanation:
Work done by the leak in 1 hour =
|
|
1
|
-
|
3
|
|
=
|
1
|
.
|
2
|
7
|
14
|
Leak will empty the tank in 14 hrs.
