Mathematics · Time and Work / Pipes and Cisterns
Two pipes X and Y can fill an empty tank in 16 hours and 20 hours respectively. Pipe Z alone can empty the completely filled tank in 25 hours. Initially, both pipes X and Y are opened, and after 6 hours, pipe Z is also opened. What will be the total time (in hours) taken to completely fill the tank?
- 130429✓
- 2283
- 3677
- 4807
Correct answer
30429
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