Mathematics · Pipes and Cisterns
Pipe A can fill a tank in 6 hours, pipe B can fill the same tank in 20 hours and pipe C can fill the same tank in 30 hours. The time taken (in hours) by them to fill one-fourth of the same tank if they operate together, is:
- 12
- 23
- 31✓
- 44
Correct answer
1
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