3/8 = 9 blueberry muffins so 15 (or 5/8) of the muffins should be strawberry if that's the only other kind of muffins in this equation.
67 multiplied by 3 is 201, so there is 201 people in the age group 12-29. Also, 67% is approximately two thirds, and we can see that reflected in our answer.
Here’s a picture of my work. The answer is seven. Hope this helps :-)
Answer:
1/15 ; 6/90
Step-by-step explanation:

(4,4) are the coordinates of C prime