Question

A water tank can be filled by a tap in 12 hours and emptied by an outlet pipe in 18 hours.

How long it take to fill the cistern if both the tap and the pipe are opened together?​

Answer 1

Answer:

18-12=6 Hours it take to fill the cistern if both the tap and the pipe are opened together

Answer 2

Answer:

18-12=6 So, the answer is 6

Step-by-step explanation:

Tank can be filled by a tap = 12 hours

Tank can be emptied by an outlet pipe = 18 hours

The time taken tobfill the cistern is =?

$12 - 18 = 6$