If two-third of a bucket is filled in 90 seconds then the time taken to fill the bucket completely will be .	Choose the correct choice:
A) 90 seconds  B) 70 seconds  C) 135 seconds  D) 100 seconds  E) 120 seconds

Rationale: "2 / 3 filled in 90 seconds 1 / 3 filled in 45 seconds then 2 / 3 + 1 / 3 = 90 + 45 seconds = 135 seconds answer : c"
Answer: C