Question

ACistern which has a leak in the bottom is filled in 15 hours had there been no leak. it could have been filled in 12 hours .if the cistern in full then in how many hours the leak can empty it.​

Answer 1

Answer:

Let the leak Can empty the cistern

in x hrs

I/12-1/x=1/15

1/x=1/i2-1/15=5/60-4/60

= 1/60

Leak can empty the cistern in

60 hrs

Answer 2

A leak can empty it in 60 hours.

Step-by-step explanation:

Since we have given that

Number of hours a cistern with leak can be filled = 15 hours

Number of hours a cistern can be filled with out leak = 12

We need to find the number of hours the leak can empty it.

So, Using the "Time and work", we get that

$\dfrac{1}{15}-\dfrac{1}{12}=\dfrac{4-5}{60}=\dfrac{-1}{60}$

So, A leak can empty it in 60 hours.

# learn more:

Tap a can fill the empty tank in 12 hours, but due to a leak in the bottom it is filled in 15 hours, if the tank is full and then tap a is closed then in how many hours the leak can empty it?

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