A leak in the bottom of a tank can empty the full tank in 8 hours. An inlet pipe fills water at the rate of 6 litres a minute. When the tank is full, the inlet is opened and due to the leak, the tank is empty in 12 hours. How many litres does the cistern hold ?
Work done by the inlet in 1 hour = (1/8 - 1/12)
Work done by the inlet in 1 min. = (1/24 × 1/60)
Volume of 1/1440 part = 6 litres.
Therefore, Volume of whole = (1440×6) = 8640 litres.
Fruitful article with nice explanation ..
Back To Top