Q: Three pipes A, B and C can fill a tank in 6 hours. When the tank was empty, all the three pipes were turned on and they worked together for 2 hours; at that instant, pipe C was closed and the pipes A and B continued to work to fill the tank. It took a total of 7 hours from start to fill the tank this way. If pipe C alone is working from the start, the time it takes will be
(a)10 hours
(b)14 hours
(c)30 hours
(d)45 hours
Correct Answer: (c)
The correct answer is (b) '14 hours'. This question from the Science & Technology domain tests knowledge of Computer & Information Technology.