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Question 77Asked in RRB JE CBT-1, 18 Dec 2024, Shift 3 (4:30 PM)

A pipe can fill a tank in 18 hours. Another pipe can empty the filled tank in 21 hours. If both the pipes are opened simultaneously, then the time (in…

A pipe can fill a tank in 18 hours. Another pipe can empty the filled tank in 21 hours. If both the pipes are opened simultaneously, then the time (in hours) in which the tank will be filled is:
  1. A126
  2. B128
  3. C129
  4. D127
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Correct answer: (A) 126

From RRB JE CBT-1 PYQ 18 Dec 2024, Shift 3 (4:30 PM)

This is question 77 of RRB JE CBT-1 PYQ 18 Dec 2024, Shift 3 (4:30 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.