## Shading Pattern

#### Problem

In the 3x3 grid, ^{6}/_{9} is shaded and in the 4x4 grid, ^{10}/_{16} is shaded.

If a 20x20 grid was shaded in the same way, what fraction would be shaded?

Problem ID: 101 (Feb 2003) Difficulty: 1 Star

In the 3x3 grid, ^{6}/_{9} is shaded and in the 4x4 grid, ^{10}/_{16} is shaded.

If a 20x20 grid was shaded in the same way, what fraction would be shaded?

Problem ID: 101 (Feb 2003) Difficulty: 1 Star