Task 9. Find the largest negative root $x_{0}$ of the equation $\frac{\sin x}{1+\cos x}=2-\operatorname{ctg} x$. In the answer, write $x_{0} \cdot \frac{3}{\pi}$.
Answer: $-3.5$

Problem 10. A group of 30 people collected cranberries in the forest. Each of them collected 2, 3, 4, or 5 buckets of cranberries, totaling 93 buckets. Moreover, the number of people who collected 3 buckets was more than those who collected 5 buckets and less than those who collected 4 buckets. Additionally, the number of people who collected 4 buckets was divisible by 10, and the number of people who collected 5 buckets was even. How many people collected 2 buckets of cranberries?

Answer: 11

Problem 11. Three companies $A, B$, and $C$ decided to jointly build a 12-story building, agreeing to finance the project equally. In the end, $A$ built 5 floors, $B$ built 7 floors, and $C$ contributed her share in money - 32 million rubles. How should companies $A$ and $B$ divide this money between themselves? In your answer, indicate how many million rubles company $A$ received.

Answer: 8