A tap can fill a tank in 36 minutes and another can empty it in 18 minutes. If the tank is already ½ full and both the taps are opened together, will the tank be filled or emptied? How long will it take before the tank is either filled completely or emptied completely, as the case may be?

A tap can fill a tank in 36 minutes and another can empty it in 18 minutes. If the tank is already ½ full and both the taps are opened together, will the tank be filled or emptied? How long will it take before the tank is either filled completely or emptied completely, as the case may be?

1). Emptied; 36 minutes
2). Filled; 18 minutes
3). Emptied; 18 minutes
4). Filled; 32 minutes

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