A water pipe can fill half of the water tank in 45 minutes. How much time will it take to fill 4 such water tanks?
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Q3
Two taps can fill a tank in 15 and 12 minutes respectively. A third tap can empty it in 20 minutes. If all the taps are opened at the same time, then in how much time will the tank be filled?
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Q4
Two pipes can fill a tank In 20 minutes and 30 minutes respectively. If both the pipes are opened simultaneously, then the tank will be filled in
(a) 10 minutes
(b) 12 rendes
(c) 15 minutes
(d) 25 minutes
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Q5
If a pipe fills the tank in 10 minutes, how much minutes it will take to half fill the tank in we connect two pipes?