0.4
Explain:
Each fraction can be turned into a decimal and a percent.
To figure that out you can either divid your fraction (numerator divided by denominator) or you can see 2/5 which is equal to 4/10. And 4/10 is 40% or 0.4.
You could also see that 40 squares are coloured out of 100 of them so you can find out 40 divided by 100 is 0.4.
I hope this not only helps you figure out the answer but also know how to get the answer any other time you have a question like this.