GAT Subject
Engineering
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24. | wo pipes X and Y fill a tank in 15 hrs. and 20 hrs. respectively, while a third pipe �Z� can empty the full tank in 25 hrs. All the three pipes are opened in the beginning. After 10 hrs. Z is close In how much time, will the tank be full ? | |
A. | 12 hrs | |
B. | 14 hrs | |
C. | 16 hrs | |
D. | 18 hrs | |