a large rubber cushion can filled with air pump in 10 min, anothe pump can fill the smae cushion in 12 min both pumps aperate together how long will it take to fill the cushion?

• X 1/10
  Y 1/12
  X+Y 6+5/60
  60/11 MINS
  =
  5 5/11 MINS
• 10 years agoHelpfull: Yes(16) No(0)
• 1/10 + 1/12 = 11/60
  hence da answr is 60/11=5.46
• 10 years agoHelpfull: Yes(7) No(0)
• simple formula :
  p*q/p+q => 10*12/10+12
  therefore ans is 55/11
• 10 years agoHelpfull: Yes(2) No(2)
• x=1/10
  y=1/12
  x+y=1/10+1/12
  32/120*60=16
  
• 10 years agoHelpfull: Yes(2) No(4)
• 1st will filled in 10 min
  2nd will filled in 12 min
  so both operate together ==(10*12)/22=5 5/11=5.45
• 10 years agoHelpfull: Yes(0) No(0)
• First fill in 10 min
  Secnd fill in 12min
  Average of both=12+102 = 11
  And we know that time is the half of average
  So, answer will be = 5.5min
• 9 years agoHelpfull: Yes(0) No(1)