A cistern is normally filled in 10 hrs,but takes 2 hrs longer to fill because of a leak on its bottom,if Cistern is full ,how much time citern would empty? Choose the correct choice:
A) 10 hours  B) 20 hours  C) 60 hours  D) 40 hours  E) 50 hours
If leakage/hour=1/x, then 1/10 -1/x= 1/12, solving 1/x=1/60   So in 60 hours full cistern will be empty.   ANSWER:60 hours
<result>C</result>
A cistern is normally filled in 10 hrs,but takes 2 hrs longer to fill because of a leak on its bottom,if Cistern is full ,how much time citern would empty?