Pipe A can fill an empty tank in 6 hours and pipe B in 8 hours. If both the pipes are opened and after 2 hours pipe A is closed. how much time B will take to fill the remaining tank?
1
\(2 \frac{1}{2}\) hrs
2
\(3 \frac{1}{3}\) hrs
3
\(4 \frac{2}{3}\) hrs
4
\(5 \frac{1}{2}\) hrs