RSL Educational | Cats and Mice!

Here is a type of question which children (and adults) often find challenging, but which is quite simple if you break it down logically.

It takes 3 cats 4 weeks to catch 12 mice.
If all the cats catch mice at the same, steady rate:

(a) How long would it take the three cats to catch 18 mice?
(b) How many mice would 2 cats catch in 12 weeks?

See this video for the answers:

As mentioned in the video, there is also a more direct (though slightly less simple) method, which is shown as Method 1 here: