DSSSB · Mathematics

A pipe can fill a tank in 12 hours. The second pipe can fill the same tank in 18 hours. If both the pipes are opened simultaneously, how much time will it take to fill the tank completely?

  1. 6 hours
  2. 8 hours
  3. 7 hours 12 minutes
  4. 7 hours 30 minutes
Answer and detailed solution are available in the protected study screen.
Register or login to attempt