Question

В стране N действует десятибалльная система оценивания знаний. Каждый из четырех одноклассников: Миша, Филипп, Игнат и Булат увлекается только одним школьным предметом. Кто-то из них увлекается математикой (будем называть его - математик), кто-то - физикой (будем называть его - физик), кто-то информатикой (будем называть его - информатик), а кто-то - биологией (будем называть его - биолог). Известно, что средняя оценка Миши суммарно по всем предметам ниже такой же средней оценки математика на 2. Средняя оценка Филиппа выше средней оценки физика на 3. Средняя оценка Игната ниже средней оценки информатика на 4. На сколько средняя оценка Булата выше средней оценки биолога?

Answer 1

Ответ:05

Пошаговое объяснение:

Answer 2

Solution:

To solve this problem, we can use a system of equations to represent the given information and then solve for the average grades of each student.

Let's denote: - M as the average grade of Misha, - F as the average grade of Philip, - I as the average grade of Ignat, - B as the average grade of Bulat, - m as the grade in mathematics, - f as the grade in physics, - i as the grade in informatics, and - b as the grade in biology.

We are given the following information: 1. Misha's average grade is 2 points lower than the average grade in mathematics. 2. Philip's average grade is 3 points higher than the average grade in physics. 3. Ignat's average grade is 4 points lower than the average grade in informatics.

We can represent this information as the following system of equations:

1. M = (m + f + i + b) / 4 2. M = m - 2 3. F = f + 3 4. I = i - 4 5. B = (m + f + i + b) / 4

We can solve this system of equations to find the average grade of Bulat in terms of the average grade of the biologist.

Let's solve the system of equations to find the value of B in terms of b.

1. From equation 1, we have: M = (m + f + i + b) / 4 2. From equation 5, we have: B = (m + f + i + b) / 4

Substituting the value of M from equation 1 into equation 5, we get: B = M

So, the average grade of Bulat is equal to the average grade of the biologist.

Therefore, the average grade of Bulat is equal to the average grade of the biologist.

This means that the average grade of Bulat is not higher or lower than the average grade of the biologist.

So, the answer to the question "На сколько средняя оценка Булата выше средней оценки биолога?" is 0.