Question

Катя, Петя, Лена и Вова соревновались в решении задач. Катя и Петя были в одной команде, а Лена и Вова - в другой. Катя и Петя решили 8 задач, из них 3 задачи решила Катя. Лена решила 2 задачи, а Вова - 7 задач. Сколько задач решил Петя? Сколько задач решили Лена и Вова? Сколько задач решили обе команды? Сколько задач решили девочки? Сколько задач решили мальчики?

Answer 1

Петя = 5 зд
Лена и Вова= 9
Обе две команды=17
Мальчики =12
Девочки=5

Answer 2

Катя решила 3 задач и
лена решила 2 задачи
вова 7 задач
1 вопрос петя 5 задач решил
2 вопрос 9 задач
3 вопрос 17 задач
4 вопрос 5 задач
5 вопрос12 задач

Answer 3

Solution to the Problem:

To solve the problem, we can follow these steps:

1. Calculate the number of problems solved by each individual. 2. Determine the total number of problems solved by both teams. 3. Calculate the number of problems solved by the girls and the boys.

Let's proceed with the calculations.

1. Calculating the Number of Problems Solved by Each Individual: - Katya and Petya solved 8 problems, with Katya solving 3 of them. - Lena solved 2 problems, and Vova solved 7 problems.

Therefore, the number of problems solved by each individual is as follows: - Katya: 3 problems - Petya: 8 - 3 = 5 problems - Lena: 2 problems - Vova: 7 problems

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2. Total Number of Problems Solved by Both Teams: - The total number of problems solved by both teams can be calculated by adding the number of problems solved by each individual.

Total problems solved by both teams = (Katya + Petya) + (Lena + Vova) Total problems solved by both teams = (3 + 5) + (2 + 7) Total problems solved by both teams = 8 + 9 Total problems solved by both teams = 17

Therefore, both teams solved a total of 17 problems.

3. Calculating the Number of Problems Solved by the Girls and the Boys: - The girls' team consists of Katya and Lena, while the boys' team consists of Petya and Vova.

Number of problems solved by the girls = Katya + Lena Number of problems solved by the girls = 3 + 2 Number of problems solved by the girls = 5

Number of problems solved by the boys = Petya + Vova Number of problems solved by the boys = 5 + 7 Number of problems solved by the boys = 12

Therefore, the girls solved 5 problems, and the boys solved 12 problems.

Conclusion:

- Petya solved 5 problems. - Lena and Vova together solved 9 problems. - Both teams together solved 17 problems. - The girls together solved 5 problems. - The boys together solved 12 problems.