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RRB Group-D Model Paper 18 with answers for online practice

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Question : 79

Total: 100

Ten pipes through which water flows at the same rate can fill a tank in 28 minutes. If three pipes go out of order, how long will the remaining pipes take to fill the tank?

40 min
8 min 24 sec
25 min 12 sec
32 min. 36 sec

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