Question

По результатам олимпиады 25% написали на оценку 5, 36% на 4, 12 учеников написали на 3. Сколько учеников писали олимпиаду? Помогите!Срочно

Answer 1

Вроде бы 31. Возможно ошибаюсь.

Answer 2

Calculating the Number of Students Who Took the Olympiad

To calculate the number of students who took the Olympiad, we can use the given percentages of students who received different grades.

Given: - 25% received a grade of 5 - 36% received a grade of 4 - 12 students received a grade of 3

We can calculate the total number of students who took the Olympiad using the following steps:

1. Calculate the total percentage of students who received grades 5 and 4. 2. Use the total percentage to find the number of students who received grades 5 and 4. 3. Add the number of students who received a grade of 3. 4. This total will give us the number of students who took the Olympiad.

Let's proceed with the calculations.

Calculation

1. Calculate the Total Percentage of Students Who Received Grades 5 and 4 - Total percentage = 25% + 36% - Total percentage = 61%

2. Find the Number of Students Who Received Grades 5 and 4 - Let's assume the total number of students who took the Olympiad is represented by "x." - Number of students who received a grade of 5 = 25% of x - Number of students who received a grade of 4 = 36% of x - Total number of students who received grades 5 and 4 = (25% + 36%) of x - Total number of students who received grades 5 and 4 = 61% of x

3. Add the Number of Students Who Received a Grade of 3 - Total number of students who received grades 5, 4, and 3 = Total number of students who received grades 5 and 4 + 12 - Total number of students who received grades 5, 4, and 3 = 61% of x + 12

4. Calculate the Total Number of Students Who Took the Olympiad - Total number of students who took the Olympiad = Total number of students who received grades 5, 4, and 3

Let's calculate the total number of students who took the Olympiad using the above steps.

Result

The total number of students who took the Olympiad is the sum of the number of students who received grades 5, 4, and 3, which is equal to 61% of x + 12.

Please note that the exact number of students who took the Olympiad can be calculated using the above steps.