Question

В зале вмещающем 750человек на концерте были свободные места :с первого по семнадцатое в трех рядах и с четвёртого по девятое в пяти рядах. сколько мест было занято?

Answer 1

1)17*3=51- кол-во свободных мест в трех рядах. 2)6*5=30 - кол-во свободных мест в пяти рядах. 3) 51+30=81 - общее кол-во своб.мест. 4)750-81=669 занятых 4)

Answer 2

750-17*3-5*5=674
если что-то не понятно,задавай вопросы

Answer 3

Calculation of Occupied Seats in the Concert Hall

To calculate the number of occupied seats in the concert hall, we need to subtract the number of available seats from the total capacity of the hall.

The given information states that there were empty seats from the first to the seventeenth row and from the fourth to the ninth row. Let's calculate the number of available seats in these rows.

- Number of available seats in the first to seventeenth rows: 17 rows * 3 seats per row = 51 seats. - Number of available seats in the fourth to ninth rows: 6 rows * 5 seats per row = 30 seats.

Now, let's calculate the total number of available seats in the concert hall:

- Total number of available seats = Number of available seats in the first to seventeenth rows + Number of available seats in the fourth to ninth rows - Total number of available seats = 51 seats + 30 seats = 81 seats.

To find the number of occupied seats, we subtract the total number of available seats from the total capacity of the hall:

- Total capacity of the hall = 750 seats. - Number of occupied seats = Total capacity of the hall - Total number of available seats - Number of occupied seats = 750 seats - 81 seats = 669 seats.

Therefore, there were 669 seats occupied in the concert hall.