Two pipes can fill a tank in 20 hours and 90 hours, respectively. The time (in hours) required to fill the tank when both pipes are opened simultaneously is:
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Correct answer: (D) 180/11
From RRB JE CBT-1 PYQ 16 Dec 2024, Shift 3 (4:30 PM)
This is question 54 of RRB JE CBT-1 PYQ 16 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.