Question

Решите пожалуйста В зале 300 мест.Когда школьники заняли 8 полных рядов,в зале осталось 140 свободных мест.Сколько мест в каждом ряду,если все ряды одинаковые?

Answer 1

300-140=160

160:8=20

300-140:8+=20

 

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Answer 2

х*8+140=300

8х=160

х=20 - рядов

300:20=15 мест

ответ: 15 мест

Answer 3

Problem Analysis

We are given that there is a hall with 300 seats. When schoolchildren occupied 8 complete rows, there were 140 empty seats left. We need to determine the number of seats in each row if all the rows are the same.

Solution

Let's assume that there are x seats in each row. Since there are 8 complete rows, the total number of seats occupied is 8 * x. We can set up the following equation:

Total number of seats occupied + Number of empty seats = Total number of seats in the hall

8 * x + 140 = 300

Now, we can solve this equation to find the value of x.

Calculation

8 * x + 140 = 300

Subtract 140 from both sides:

8 * x = 300 - 140

8 * x = 160

Divide both sides by 8:

x = 160 / 8

x = 20

Answer

If all the rows are the same, there are 20 seats in each row.