A tank, which usually takes 5 hours to be filled, takes 6 hours to fill because of a leak. Find the time in which the leak can empty the tank if it is filled and the inlet pipe is shut.

(Volume filled per hour - volume leaked per hour)* 6 = volume of cistern.

From here leaked per hour I will find out then ,

leaked per hour * total time taken for empty = volume of cistern

Volume of cistern= any volume assume then 30 hours .

I have assumed that inlet is much faster than leaked but can leaked be faster than inlet ?

I think if i assume so here ->

value will be negative thats why inlet is much faster than leaked

(Volume filled per hour - volume leaked per hour)* 6 = volume of cistern.

From here leaked per hour I will find out then ,

leaked per hour * total time taken for empty = volume of cistern

Volume of cistern= any volume assume then 30 hours .

I have assumed that inlet is much faster than leaked but can leaked be faster than inlet ?

I think if i assume so here ->

**(**(Volume filled per hour - volume leaked per hour)* 6 = volume of cistern**.)**value will be negative thats why inlet is much faster than leaked

Last edited: