Answer:
<h2>40%</h2>
Step-by-step explanation:
The given ratio is

One way to find the original ratio in terms of percetange, we can multiply a factor so that the denominator reach 100. So, let's multiply this fraction by 20, each part of it

This means that the original percentage is
.
Now, we have to chose the grid that has 40 squares painted. None of the grids given in the image represents 40%.
You just need to count, the grid that has 40 squares painted, that's your answer.