a water tank can be filled completely in 15 hours. if the tank is filled for 5×1÷2hours and left .what part of the tank is remained to be filled please answer fast i will give you as brainliest fast plz ​

Let Volume of Tank be V

pipe A can fill the tank  

5

V

​

 in 1 Hour

pipe B can fill the tank  

8

V

​

 in 1 Hour

Drainage Hole can empty the tank  

20

V

​

 in 1 Hour

⇒  

5

V

​

+  

8

V

​

−  

20

V

​

=  

T

V

​

where  

T

V

​

 is the Volume filled when 2 pipes and 1 hole is opened, in 1 Hour

⇒  

5

1

​

+  

8

1

​

−  

20

1

​

=  

T

1

​

solving we get T=  

11

40

​

hrs

Step-by-step explanation:

A tank can be filled in 9 hours by one pipe, 12 hours by a second pipe and can be drained when full by a third pipe in 15 hours.

people grow faster than other people.

step-by-step explanation:

should you really be posting this isn't math boi.

$12. that is my answer.