Mathematics · Time and Work
Two taps P and Q can fill a cistern in 30 and 20 minutes respectively. Both P and Q were opened for a few minutes after which P was closed. The rest of the cistern was filled by Q in 5 minutes. After how many minutes was pipe P closed?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 18 minutes
- 212 minutes
- 310 minutes
- 49 minutes✓
Correct answer
9 minutes
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