Mathematics · Time and Work
A tank can be filled by two taps A and B in 5 hours and 15 hours respectively. Tap C can empty the full tank in 5 hours. If all three taps are opened simultaneously at 7:00 AM, at what time will the tank be completely filled?
- 111 : 00 PM
- 209 : 00 PM
- 310 : 00 PM✓
- 407 : 00 PM
Correct answer
10 : 00 PM
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