Mathematics · Pipes and Cisterns
Pipe 'D' and pipe 'E' can fill a tank in 15 minutes and 30 minutes, respectively. Pipe 'F' can empty the same tank in 20 minutes. Initially, pipes 'D' and 'E' opened together and after 4 minutes pipe 'F' is also opened. Find the total time taken to fill the tank this way.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 114 minutes
- 216 minutes✓
- 312 minutes
- 410 minutes
Correct answer
16 minutes
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