A tank of capacity 25 liters has an inlet and an outlet tap. If both a opened simultaneity, the tank is filled in 5 minutes. But if the outlet flow rate is doubled and taps opened, the tank never gets filled up. Which of hte following can be the outlet flow rate in liters per minute.
2
6
4
3
1
I Tied in this way :-
in one min x litre is filled and y litre get empty
in one min amount filled in tank is 1/5(25)=5 litres
X-Y=5
Now condition is if outlet flow is doubled and Tank never get filled which means work done by outlet and inlet pipe in one min is same i.e x= 2y
So y=5 l/min , which is not in option
Please tell my mistake
2
6
4
3
1
I Tied in this way :-
in one min x litre is filled and y litre get empty
in one min amount filled in tank is 1/5(25)=5 litres
X-Y=5
Now condition is if outlet flow is doubled and Tank never get filled which means work done by outlet and inlet pipe in one min is same i.e x= 2y
So y=5 l/min , which is not in option
Please tell my mistake
