A pipe can fill an empty cistern with water in 5 hours. Due to leakage in its bottom, it takes 6 hours to fill the cistern. When the cistern is full, the time (in hours) in which it is emptied due to leakage is
1
30
2
\(\frac{6}{5}\)
3
\(\frac{1}{30}\)
4
\(\frac{5}{6}\)