Chapter 8: Teacher Lisana 

"Max, when did you get so strong?" Isabella blinked her beautiful eyes and asked.

"Err..." After thinking, he omitted the truth: "I suddenly got strong, I'm not sure how it happened."

"Ohh..." Isabella looked thoughtful and said, "Max, I've been hiding something from you."

"Mm?" He looked at her.

She sighed and said slowly: "Before I came to this school, I was a school with gifted children, that is, with powers beyond human comprehension. And although I also have unknown powers, they were insignificant at that school, so I ran away from there. But seeing you defeat Israel, I must say that he also came from the same school as me. That's why it's surprising that you can defeat him so easily."

"Then that's it." Max smiled and touched her nose: "It doesn't matter, I'm not changing schools."

"No, Max. I didn't say that to change schools, because we're in the final year and we're going to graduate soon, but yes because there are colleges of this type. I think you should test your skills, and if you have the strong ability, it's worth joining one of these colleges."

"Are you going too?" Max asked.

"I, I'm weak." She lowered her head.

"Then it doesn't matter, I won't either." Max said indifferently.

"No, you don't need to sacrifice yourself for me. I, I'll make an effort!" For the first time in her life, she really wanted to increase her strength and abilities.

Max smiled and rubbed his hand over her beautiful cheek and gave her a peck.

'A college with people with powers.' Max's eyes blinked. Maybe not a bad idea.

20 minutes later they arrived at school, for 15 minutes Max read 15 thousand words.

'Now there are 21,000 words left to be read.' Max thought.

In front of Fael School, the students were looking in the direction of Max and Isabella in a strange way, after all, Isabella was one of the most desired flowers in the school.

Max's current appearance caught everyone's attention. Especially the girls who looked at him with longing.

"Is this really Max?" Some could not believe it.

"He went through puberty and that's why he was so handsome?" A girl licked her lips seductively.

"Are you Max?" Even the math teacher couldn't believe it.

"Yes," Max said indifferently.

"Ohh..."

"Okay, let's start class." The teacher was stunned for a few minutes but soon recovered.

Max looked at the teacher and smiled as he walked away.

The teacher was the prettiest in the school, she wore a black skirt that went to her knee and wore a black garter belt.

The beautiful teacher with long wavy dark brown hair and honey-colored eyes begins to write on the board: "The distribution of salaries paid in a company can be analyzed by highlighting the total share of the wage bill paid to the 10% who receive the highest salaries. This can be represented in the form of a graph formed by two straight line segments, joined at a point P, whose abscissa has a value equal to 90, as illustrated in the figure."

[On the horizontal axis of the graph there is the percentage of employees, sorted in ascending order by their salary values, and on the vertical axis, there is the percentage of the total salary mass of all employees.

The Gini index, which measures the degree of concentration of income in a given group, can be calculated by ratio.

THE

A + B

where A and B are the measurements of the areas indicated in the graph. The company's goal is to make its Gini index equal to the country's, which is 0.3. To do so, it needs to adjust salaries in order to change the percentage that represents the share perceived by the 10% of employees with the highest salary in relation to the total wage bill.

To achieve the desired goal, the percentage must be

a) 40%

b) 20%

c) 60%

d) 30%

e) 70%]

"Max." The teacher called him : "Can you solve this?"

"Yea." Max got up.

The other students who were still confused didn't expect Max to respond, they even expected him to be embarrassed, especially the boys who liked Isabelle.

Max starts writing and dictating: [

A = 0.3

A + B

A = 0.3(A + B)

A = 0.3A + 0.3B

A - 0.3A = 0.3B

0.7A = 0.3B

"Multiplying both members of the equation by 10, we have:"

7A = 3B

A = 3

B 7

A = 3B

7

"Now notice that the area of ​​the triangle formed by the union between the areas of A and B is equal to the sum of the areas of A and B. Thus:"

A + B = 100·100

two

A + B = 10000

two

A + B = 5000

"Now, from the algebraic value of A, substitute it in this equation:"

A + B = 5000

3B + B = 5000

7

3B + 7B = 5000

7 7

10B = 5000

7

10B = 5000·7

B = 35000

10

B = 3500

"Consequently A = 1500."

"Note that B is formed by two geometric figures. One is a triangle, whose base runs from 0 to 90 on the x-axis and height is y, and the other is a trapezoid, whose largest base, which measures 100, is to the right, height is 10, and its smallest base is also y as length (remember that y is the coordinate of point P). The area of ​​B is determined by the sum of the areas of these two figures."

B = 90·y + (100 + y)·10

2 2

3500 = 90·y + (100 + y)·10

2 2

3500 = 45y + 500 + 5y

3500 - 500 = 50y

3000 = 50y

y = 60

"As said, y is the coordinate of P that represents the share perceived by 90% of employees: those who receive the lowest salaries. That portion is 60%. Thus, the percentage perceived by the highest-paid employees should be 40%."

Max dropped the white chalk.

"Very well, you can sit down again." Teacher Lisana's eyes sparkled with an odd glint as she looked at Max.

Out of curiosity, Max looked at her information.

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'Wow! Does she see me that well? And her appearance, as expected, is very tall.' Max took the book and went back to reading.