A pipe can fill a cistern in 55 minutes. Find the time in which 1/11 part of the cistern will be filled?	Choose the correct choice:
A) 5 min  B) 2 min  C) 3 min  D) 1 min  E) 10 min

Rationale: "full cistern filled in = 55 minutes 1 / 11 part filled in = 55 * 1 / 11 = 5 minutes answer is a"
Answer: A