An outlet pipe empties a tank which is full in 10 hours.
An outlet pipe empties a tank which is full in 10 hours. If the inlet pipe is kept open, which lets liquid in at the rate of 8 litres/min then outlet pipe would take 6 hours longer. Find the capacity of the tank.
Answer/Solution
12800 litres
Steps/Work
Let the rate of outlet pipe be x liters/hour;
Rate of inlet pipe is 8 litres/min, or 8*60 = 480 liters/hour;
Net outflow rate when both pipes operate would be x-480 liters/hour.
Capacity of the tank = x*10 hours = (x-480)*(10+6) hours
10x=(x-480)*16 --> x=1280 --> capacity = 10x = 12800 liters.
Answer: B
Rate of inlet pipe is 8 litres/min, or 8*60 = 480 liters/hour;
Net outflow rate when both pipes operate would be x-480 liters/hour.
Capacity of the tank = x*10 hours = (x-480)*(10+6) hours
10x=(x-480)*16 --> x=1280 --> capacity = 10x = 12800 liters.
Answer: B