3 Cats If 3 cats can kill 3 rats in 3 minutes, how long will it take 100 cats to kill 100 rats? Answer It will take 3 minutes for 100 cats to kill 100 rats. 1 cat can kill 1 rat in 3 minutes, so 100 cats can kill 100 rats in 3 minutes. « Previous RiddleUp Down Cold Hot Next Riddle »Four Oars