A pump can fill a cistern in 40 minutes and another pump can empty the filled up cistern in 1 hour. By mistake, without closing the second pump, the first pump is opened. The time in which the empty cistern will be filled up is
5 726 60055150f5c84e74406111e4
Q:
A pump can fill a cistern in 40 minutes and another pump can empty the filled up cistern in 1 hour. By mistake, without closing the second pump, the first pump is opened. The time in which the empty cistern will be filled up is
- 13 hoursfalse
- 24 hoursfalse
- 31 hoursfalse
- 42 hourstrue
- Show Answer
- Workspace
- Discuss