A Journey in Time


Task 6/7

They have been a little creative with the restoration of the old storage building.

Now the monks give you a new task:
Do you see them too?

In all the panes of the windows of the culture centre facing the waterfront you can see cats in each and every one of them.

These are the cats that have lived in the old storage building through the past 100 years or so.

If there are small white cats behind every pane in windows with 3×3 panes, and if there are one large black cat behind every window with 3×5 panes, how many cats are there in total?

Insert the number of cats here: