They gave you (blue) find the measurement of (yellow) since (blue)+(yellow) make up a line they =180
105+(yellow)=180
-105 both sides
yellow= 75
-8=3/4+4. Equation is y=mx+b.... y is x... mx is the slope... and the b is y intersection.
Flutes-10, 5, 2
Clarinets- 8, 12, 16
10:8=5:4
5:12
2:16=1:8
Hope this helps!