Pipe A alone can fill 11.11% of the tank in 5 hours and pipe B can fill half the tank in 360/7 hrs. Both pipes are opened to fill the empty tank and closed when it is filled. After that is was found that the tank was emptied in 8/3 hrs because an outlet pipe C was connected to the tank was opened from the beginning. If pipe C was closed instead of closing A and B, then the remaining tank would be filled in how much time?
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ir will take 8 hrs because 3 of them are slow so
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