C. 19.42% because you subtract 389.85 from 314.15 which equals 75.7. So then set it up like an algebraic equation. 389.85x=75.7 divide 75.7 by 389.85 to find the decimal. Then you have to move the decimal to the right two places, since it is a percentage. And then round your answer, so c. 19.42% is your answer. Hope this helped! :)
First you find the total, 40, then you find how many large or blue there are, 28 then you divide by the total to be 28/40 or 7/10
I hope this helps you
2y+y=9
3y=9
y=3
x=2y=2.3=6