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A and B are two taps which can fill a tank individually in 10 minutesand 20 minutes respectively. However, there is a leakage at the bottom which can empty a filled tank in 40 minutes. If the tank is empty initially, how much time will both the taps take to fill the tank (leakage is still there) ?

• 8 minutes
  1/10 + 1/20 - 1/40 =1/8
• 11 years agoHelpfull: Yes(2) No(0)
• Tank filled by by Pipe A in 1 minute = 1/10
  Tank filled by Pipe B in 1 minute = 1/20
  Leakage in 1 minute = 1/40
  So, Total work done in 1 minute = 1/10+1/20-1/40
  =1/8
  Work done in 1 minute is 1/8
  Time taken for filling the tank is 8 minutes
  
• 8 years agoHelpfull: Yes(1) No(0)