A tap can fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?

1. A tap can fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?

[EXIM Bank MTO-2013 : 2013]

1. 3 hours

2. 3.25 hours

3. 3.45 hours

4. 4 hours

5. None of these

Answer

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