A pipe takes a hours to fill the tank. But because of a leakage it took 4 times of its original time. Find the time taken by the leakage to empty the tank
Choose the correct choice.
A) 50 min  B) 60 min  C) 90 min  D) 80 min  E) 70 min
pipe a can do a work 60 min.   lets leakage time is x;   then   1/60 -1/x=1/240   x=80 min   ANSWER:80 min
<result>D</result>
A pipe takes a hours to fill the tank. But because of a leakage it took 4 times of its original time. Find the time taken by the leakage to empty the tank