Warning: implode(): Invalid arguments passed in /www/wwwroot/jobquiz.info/mdiscuss.php on line 336 Two pipes A and B are attached to a cistern. Pipe A can fill the cistern in 3 hours while pipe B can empty it in 9 hours. When both the pipes are opened together, find the time for filling the cistern? ?->(Show Answer!)
1. Two pipes A and B are attached to a cistern. Pipe A can fill the cistern in 3 hours while pipe B can empty it in 9 hours. When both the pipes are opened together, find the time for filling the cistern?