Question

4. Two taps take 5 hours and 10 hours to fill a tank. two outlets take 15 hrs and 30 hrs to empty the tank. if both taps and both outlets are opened, how long will it take to fill the tank?
answer fast ​

Answer 1

5hrs 20mins ...........................

Answer 2

Answer:

TIME TAKEN BY FIRST TAP TO FILL THE TANK = 1/5 HRS

TIME TAKEN BY SECOND TAP TO FILL THE TANK= 1/10 HRS

TIME TAKEN BY FIRST OUTLET TO EMPTY THE TANK = 1/15 HRS

TIME TAKEN BY SECOND OUTLET TO EMPTY THE TANK = 1/30 HRS

BTP, 1/5 + 1/10 - 1/15 + 1/30

3/10 - 3/30

9 - 3 / 30

6/30

1/5

THEREFORE, TIME TAKEN TO FILL THE TANK = 5HRS