If 3 cats catch 3 rats in 3 minutes, how many cats will catch 100 rats in 100 minutes?

3 cats can catch 3 rats in 3 minutes ==> 1 rat per minute.It takes 3 cats to catch 1 rat per minute.100 rats in 100 minutes ==> 1 rat per minuteThe same 3 cats can do it, if they don't wear out and take naps.