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"In an hour" is the correct way to indicate the time of her return.
A bath can be filled by the cold water pipe in 20 hrs and by the hot water in 30 hrs. Mohit leaves the bathroom after turning on both pipes simultaneous...
Pipe ‘A’ and pipe ‘B’, together can fill 20% of a tank in 8 hours while pipe ‘C’ takes 50 hours to empty it. ...
With a bucket full of water, a tank can be filled with 16 buckets. When each bucket holds 12.5 liters of water, how many buckets of 10-liter capacity ca...
In how many minutes can the faster Tap alone fill the tank, if Tap P and Q, working together, can fill the tank in 45 minutes and Tap P is three times f...
If a tank can be filled by a tap in 12 hours, but due to an outlet, it actually takes 9 hours longer to fill the tank, find the duration in which the ou...
Pipes A and B can fill a tank in 12 minutes and 15 minutes, respectively, while outlet pipe C can empty the entire tank in 1 hour. All three pipes are ...
Pipe A alone fill the tank in x hours and Pipe B alone fill the tank in (x – 7) hours. If the efficiency of pipe B is double of pipe A and pipe A fill...
Pipe ‘A’ can fill a tank in 20 hours while pipe ‘B’ takes 40 hours to empty it. Pipe ‘A’ is opened alone when the tank was empty and after 1...
Pipe ‘A’ can fill a tank in 25 hours while pipe ‘B’ takes 30 hours to empty it. Pipe ‘A’ is opened alone when the tank was empty and after 1...
Two inlet pipes M and N alone can fill a tank in 12 hours and 15 hours respectively and an outlet pipe P alone can empty the whole tank in 10 hours. Fir...