Mathematics · Time and Work
A tank when full can be emptied by an outlet pipe A in 5.6 hours, while an inlet pipe B can fill the same empty tank in 7 hours. If pipes A and B are turned on alternatively for 1 hour each starting with pipe A when the tank is full, how long will it take to empty the ta nk?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 147 hours✓
- 248 hours
- 355 hours
- 456 hours
Correct answer
47 hours
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