Geometry and Measurement for Grade 11, Problem ID: 1462

Geometry and  Measurement K11The picture shows a tiling pattern which is made of square green tiles 10 x 10 cm and gray tiles 20 x 10 cm.
The pattern is extended to cover a large surface.

What fraction of the surface is colored green?

( A part of the pattern that is regularly repeated is smaller than the shown set of tiles.)


25%20%12.5%10%