if a and b fills a tank in 10 and 12 hours respectively and c can empty tank in 20 hours howmuch time does three tank take to fill the tank

• 1/10+1/12-1/20=2/15
• 7 years agoHelpfull: Yes(2) No(0)
• 1/10+ 1/12-1/20= 2/15
• 7 years agoHelpfull: Yes(0) No(0)
• 1 hr work - 11L filled 3L drained out = Net work 8L
  Total work 60
  Total time will be 60/8 = 15/2 hrs
• 4 years agoHelpfull: Yes(0) No(0)