SOLUTION: A cistern normally filled in 8 hours, takes 2 hours longer due to a leak. If the cistern is full the leak shall empty it in ?

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Question 899075: A cistern normally filled in 8 hours, takes 2 hours longer due to a leak. If the cistern is full the leak shall empty it in ?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

Let x represent time leak would take to drain pool    

1%2F8+-+1%2Fx+=+1%2F10 |Multiplying thru by 40x so as all denominators = 1

   5x - 40 = 4x

      x = 40hrs, time leak would take to drain pool