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Question 71Asked in RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)

Anirudh and Brahmaji are assigned the work of constructing a wall. Anirudh can do the

Anirudh and Brahmaji are assigned the work of constructing a wall. Anirudh can do the job in 60 hours alone where as Brahmaji can do the job three times faster. Anirudh starts the work during the first hour and Brahmaji does the work during the second hour. During the third hour both do the job simultaneously. If they continue in this fashion, how long it will take for them to complete the job?
  1. A21.5 hours
  2. B22.5 hours
  3. C23 hours
  4. D7.5 hours
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Correct answer: (C) 23 hours

From RRB JE CBT-1 PYQ 20 Feb 2026, Shift 1 (9:00 AM)

This is question 71 of RRB JE CBT-1 PYQ 20 Feb 2026, Shift 1 (9:00 AM). 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.