Answer
Александр
The correct choice:
15 kilograms.
Denote the proportion of each ingredient in the bread by "X".
The equation for the task is:
10*X+5*X+3*X+2*X = 100
Let's solve this equation.
20*Х = 100
Х = 5.
Since yeast has a coefficient of 3, we have:
3*5 = 15 kilograms.
Answer: 15 kilograms.