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Postal or Sorting Assistants Model Paper 4 With Solutions

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Question : 3

Total: 100

Two pipes can hill a tank in 10 h and 16 h respectively. A third pipe can empty the tank in 32 h. If all the three pipes function simultaneously, then in how much time the tank will be full? (in hours)

7
11
21
7
13
21
8
4
21
6
5
14

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