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RRB JE · Free quiz

RRB JE — free 5-question quiz

5 questions in the RRB JE pattern with instant scoring and solutions. A free account keeps your score and opens full mocks and your weak-topic map.

Question 1 of 5

Medium

Pipe A fills a tank in 12 hours and Pipe B empties it in 15 hours. If both pipes are opened simultaneously, in how many hours will the tank be filled?