If and and Color Formatting

I have an issue in understanding/creating the formulae.

I have five condition and one result cell, if the first condition is met and rest all the conditions is not met then it will come up with 20% and will color only 20% of the cell, if the two conditions are met then it will come up with 40% and will color only 40% of the cell and so on and so forth.

Please find the attached file.