Mathematics · Time and Work
Two pipes C and D can fill a tank in 6 hours and 9 hours, respectively. They are opened alternately for 1 hour each, starting with C first. In what duration will the tank be completely filled?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 17 hours✓
- 26 hours
- 35 hours
- 48 hours
Correct answer
7 hours
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