A pipe can empty 2/3rd of a cistern in 12 mins. In 8 mins, what part of the cistern will be empty? Options
A) 2 / 3  B) 2 / 5  C) 4 / 9  D) 5 / 7  E) 4 / 11

Rationale: "2 / 3 - - - - 12 ? - - - - - 8 = = > 4 / 9 c"
Answer: C