To make bread dough, a baker mixes flour, eggs, yeast and salt by weight in pounds in the ratio of 11: 9: 3: 2, respectively. how many pounds of yeast are required to make 20 pounds of bread dough?

In a standard batch, you have 11 pounds of flour, 9 pounds of eggs, 3 pounds of yeast and 2 of salt. This means the bread dough will weigh 11+9+3+2=25 pounds. The ratio of yeast to dough is then 3:25. To get 20 pounds of dough, we need x amount of yeast. Since its a ratio, 3/25 = x/20. We then solve for x, so x = 20*(3/25) = 12/5 = 2.4 pounds of yeast.