Looking at the graph above, you are able to tell which points are true to the equation.
C. (5/2, 5) is true to the equation because it is located within the red region.
450 g in 2:13
<u>Total proportion asked for </u>=2+13=15
<u>Now comparing g with ratio, or whatever </u>
450/15=30g
Therefore 1 in ratio depicts of 30g
So final answer = 

More to know, daily bit of knowledge: The Binomial Theorem:
