Example 1 (from Italy)

We have to build a supermarket and its parking (look at the image). x is

smaller than the half of square's side. How must x measure to make a parking

19332m2 large?

Solution:

xxxx 2150150193321502

22 21501503168 xxxx

xx 30033168 2

010561002 xx

38501056250050 x 881 x not acceptable (because of the

constraints)

122 x

So the supermarket side has to be 12m long.