⟩ Two identical taps fill 2/5 of a tank in 20 minutes. When one of the taps goes dry in how many minutes will the remaining one tap fill the rest of the tank?
1. 5 minutes
2. 10 minutes
3. 15 minutes
4. 20 minutes
5. None of the above
Ans : C
1. 5 minutes
2. 10 minutes
3. 15 minutes
4. 20 minutes
5. None of the above
Ans : C