Watch out! Fragile!

Watch out! Fragile!

A fragile item must be sent in a cardboard box. In order to prevent the element from hitting against the walls of the box, we have 10 plastic foam cubes that are used as "bumpers".

How can the 10 cubes be positioned along the inner walls of the box so that there is an equal number of cubes on each wall of the box?


The "trick" is to use the same cube on two different walls.