A cistern is normally filled in 12 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in? Select the correct option
A) 33  B) 84  C) 40  D) 99  E) 11
1/12 - 1/x = 1/14   x = 84   Answer: 84
<result>B</result>
A cistern is normally filled in 12 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in?