If 8 cats can kill 8 rats in 8 minutes, how long will it take 100 cats to kill 100 rats? Pick
A) 6 minutes  B) 7 minutes  C) 8 minutes  D) 9 minutes  E) 10 minutes

Rationale: it will take 8 minutes for 100 cats to kill 100 rats . 1 cat can kill 1 rat in 8 minutes , so 100 cats can kill 100 rats in 8 minutes answer c
Answer: C