Question

В 8 "А" из 20 учеников 16 проголосовали "за" школьную форму. Точно такой же процент был в 8 "Б", где учиться 30 человек, и в 8'В", в котором "за" высказались 20 учеников. Сколько учеников в 8"В" и сколько всего учащихся проголосовали "за "? 1. Найти сколько процентов "за в 8"А" класса.2. Найти сколько человек "за в 8"Б" класса. 3. Найти сколько всего учащихся в 8"В" классе. 4. Найти сколько всего человек проголосовали "за"

Answer 1

1) 20/100=0.2 ученика в 1 % в 8 А
16/0.2=80% в 8 А проголосовало за
2) 30/100 = 0.3 ученика в 1 % в 8 Б
0.3*80= 24 ученика в 8 Б проголосовали за
3) 20/80= 0.25 ученика в 1% в 8 В
0.25*100=25 учеников в 8 В
4) 20+24+16=60 учеников проголосовали за

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Answer 2

Task Summary

We are given the following information: - In class 8A, out of 20 students, 16 voted in favor of the school uniform. - The same percentage was observed in class 8B, where 30 students study. - In class 8C, 20 students expressed their support for the school uniform.

We need to find the following: 1. The number of students in class 8C and the total number of students who voted in favor. 2. The percentage of students in class 8A who voted in favor. 3. The number of students in class 8B who voted in favor.

Let's solve these step by step.

Step 1: Finding the Number of Students in Class 8C and the Total Number of Students Who Voted in Favor

To find the number of students in class 8C, we are given that 20 students expressed their support for the school uniform in that class. However, we need to find the total number of students in class 8C.

Unfortunately, we don't have enough information to determine the total number of students in class 8C. We only know the number of students who voted in favor, but not the total number of students in the class.

Therefore, we cannot answer this question with the given information.

Step 2: Finding the Percentage of Students in Class 8A Who Voted in Favor

In class 8A, out of 20 students, 16 voted in favor of the school uniform. To find the percentage, we can use the formula:

Percentage = (Number of students who voted in favor / Total number of students) * 100

Substituting the values, we get:

Percentage = (16 / 20) * 100

Calculating this, we find that the percentage of students in class 8A who voted in favor is 80%.

Step 3: Finding the Number of Students in Class 8B Who Voted in Favor

We are given that the same percentage of students voted in favor in class 8B as in class 8A. We know that in class 8B, 30 students study. To find the number of students who voted in favor in class 8B, we can use the formula:

Number of students who voted in favor = (Percentage / 100) * Total number of students

Substituting the values, we get:

Number of students who voted in favor = (80 / 100) * 30

Calculating this, we find that the number of students in class 8B who voted in favor is 24.

Step 4: Finding the Total Number of Students Who Voted in Favor

To find the total number of students who voted in favor, we need to add the number of students who voted in favor in class 8A and class 8B.

Total number of students who voted in favor = Number of students who voted in favor in class 8A + Number of students who voted in favor in class 8B

Substituting the values, we get:

Total number of students who voted in favor = 16 + 24

Calculating this, we find that the total number of students who voted in favor is 40.

Summary

Based on the given information, we can conclude the following: 1. The number of students in class 8C cannot be determined with the given information. 2. The percentage of students in class 8A who voted in favor is 80%. 3. The number of students in class 8B who voted in favor is 24. 4. The total number of students who voted in favor is 40.