Question

Для получения красного диплома в стране N из 15 оценок допускаются лишь три «четверки». Какой минимальный средний балл может быть у учеников с красным дипломом?

Answer 1

Ответ:4,8

Объяснение:

5×12=60

60+4+4+4=72

72:15=4,8

Answer 2

Minimum Average Grade for Red Diploma in Country N

To calculate the minimum average grade required for a red diploma in Country N, we can use the information provided that only three "fours" are allowed out of 15 grades.

Given that the total number of grades is 15 and only three "fours" are allowed, we can calculate the minimum average grade required for a red diploma.

Let's denote: - x as the sum of all grades - y as the number of "fours"

The minimum average grade can be calculated using the formula: Minimum Average Grade = (x - 4y) / (15 - y)

Substituting the given values: Minimum Average Grade = (x - 4*3) / (15 - 3)

Solving for the minimum average grade, we get: Minimum Average Grade = (x - 12) / 12

This formula allows us to find the minimum average grade required for a red diploma in Country N.