Yes, I can show you what i did.
Add all of the colors together.
Next depending on the question... you would for example #1 you would add the number of people who like the colors yellow and purple together.
Then divide the number of the peoples colors by 300.
For number one: i got 16%.
For number two: i got 1451
For number three: i got 290
for number four: i got 96