DSSSB · Mathematics
Three pipes P, Q and R are connected to a tank. Out of the three, P and Q are the inlet pipes and R is the outlet pipe. If opened independently, P fills the tank in 6 hours and Q fills the tank in 18 hours. If all three are opened simultaneously, it takes 45 minutes extra to fill the tank completely than if only P and Q are opened. How much time (in hours) does it take to empty the tank if only R is opened?
- 31.5
- 35.8
- 41.4
- 25.6
Three pipes P, Q and R are connected to a tank. Out of the three, P and Q are the inlet pipes and R is the outlet pipe. If opened independently, P fills the tank in 6 hours and Q fills the tank in 18 hours. If all three are opened simultaneously, it takes 45 minutes extra to fill the tank completely than if only P and Q are opened. How much time (in hours) does it take to empty the tank if only R is opened?
- 31.5
- 35.8
- 41.4
- 25.6
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