Mathematics · Pipes and Cisterns
Three pipes A, B, and C can fill a cistern in 270 hours. After working together for 90 hours, C is closed, and then A and B fill the remaining part in 270 hours. Find the number of hours required by C alone to fill the empty cistern.
- 1820
- 2810✓
- 3800
- 4790
Correct answer
810
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