What is the charging standard for property services in this community?

Isn't this the topic of property management practice this year?

1, let the total turnover be x, 200+10% x+5.65% x = x.

X=237. 1 1

The charging standard is = 237.110/12 =1.98 yuan/square.

2. Let the charging rate be Y, and the guaranteed operating turnover rate be 200+5.65% x = X.

X=2 1 1.98

1.98 * 12 * 10 * y = 2 1 1.98

y=89.22%

3. Let the increase of property fees be Z ..

200 *( 1+20%)+ 10% X+5.65% = X

X=284.53

Z=284.53-240=44.53

In the third question, I understand that maintaining the profit is still the profit of 10%, not the real figure of 10% in the first question.

I don't know if it's right, please give me some advice.