Question

10 A pipe can fill a cistern in 6 hours. Due to a leak in the bottom it is in 7 hours. When the cistern is
full,in how
much time will it be emptied by the leak?​

Answer 1

Answer:Let us call the pipe Pipe A.

Pipe A fills the cistern in 6hrs

so in one hr Pipe A fills 1/6th of the cistern.

However with the leak it takes 7hrs for Pipe A to fill the cistern.

Hence in one hour the cistern will have 1/7th left in.

So the difference between not leaking and leaking is 1/6 - 1/7 = 1/42 th of the cistern

this is amount of leak per hour.

Hence it will take 42 hours to fully empty the

Step-by-step explanation:42 hours

Answer 2

Answer:

It will take 42 hours.

Step-by-step explanation:

Pipe fills the cistern in 6 hours

But due to the leak in the bottom of the water cistern it took 7 hours to fill instead of 6 hours, this is equal to losing 1 by 6 of the water content over 7 hours.

So, 6 by 6 x 7 hours is equal to 42 hours