DSSSB · Mathematics

Two taps can fill a tank in 6 hours and 12 hours respectively. The third tap can empty it in 24 hours. If all the taps are opened simultaneously, how much time (in hours) will it take to fill the empty tank?

  1. 4.2 hours
  2. 4.8 hours
  3. 2 hours
  4. 3.5 hours
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