Question

Учитель принес в класс билеты в театр и цирк. 15 учеников класса купили билеты в театр, а 18 - в цирк, причем 7 человек из них- на оба представления сразу. Сколько учеников класса купили билеты?

Answer 1

(15+18)=33 всего билетов

33-7*2=33-14=19 учеников покупали по одному билету 

19+7=26 учеников покупали билеты.

Answer 2

15+14(так как 7*2)+11(так как 18-7)=40

Ответ:40

Answer 3

Calculating the Number of Students Who Bought Tickets

To calculate the number of students who bought tickets, we can use the information provided in the question and break it down step by step.

1. Tickets Bought for Theater and Circus: - 15 students bought tickets for the theater. - 18 students bought tickets for the circus. - 7 students bought tickets for both the theater and the circus.

2. Calculating the Total Number of Students Who Bought Tickets: - To find the total number of students who bought tickets, we can add the number of students who bought tickets for the theater and the circus separately and then subtract the students who bought tickets for both.

3. Calculation: - Number of students who bought tickets for the theater: 15 - Number of students who bought tickets for the circus: 18 - Number of students who bought tickets for both: 7

- Total number of students who bought tickets = (Number for theater) + (Number for circus) - (Number for both)

- Total number of students who bought tickets = 15 + 18 - 7 - Total number of students who bought tickets = 26

Therefore, 26 students in the class bought tickets for either the theater, the circus, or both.

(#1)