You see the triangle angles always need to equal to 180. We can see that A is 33 and C is 23 so add these two and you get 56. Now what's the difference between 56 and 180? its 124
You would multiply the cups of flour by 3 and the cups of water by 3. which would give you 9 cups of flour and 6 cups of water. the ratio is 1.5 cups of flour to 1 cup of water.