Question

Маша решает любую трехбалльную задачу за 2 минуты, четырехбалльную за 3 минуты, пятибалльную за 5 минут. Сколько баллов наберет маша за 17 минут? Напишите решение пожалуйста.

Answer 1

1. 3*7=21(балл)-14 минут
2. 4*1=4(балла)-3 минуты
3. 21+4=25(баллов)-за 17 минут
Ответ:25 баллов за 17 минут.

Answer 2

3 пятибальные задачи за 15 минут
остается 2 минуты (17-15=2)
5 * 3 = 15 баллов + 3 балла за трехбальную двухминутную задачу.
Ответ: 18 баллов.

Answer 3

Problem Analysis

We are given that Masha can solve a three-point problem in 2 minutes, a four-point problem in 3 minutes, and a five-point problem in 5 minutes. We need to determine how many points Masha will score in 17 minutes.

Solution

To solve this problem, we can calculate the number of problems Masha can solve in 17 minutes and then multiply that by the respective point value of each problem.

Let's calculate the number of each type of problem Masha can solve in 17 minutes:

- Three-point problems: Masha can solve one problem in 2 minutes. So in 17 minutes, she can solve 17 / 2 = 8.5 three-point problems. Since we can't have a fraction of a problem, we round down to the nearest whole number. Therefore, Masha can solve 8 three-point problems.

- Four-point problems: Masha can solve one problem in 3 minutes. So in 17 minutes, she can solve 17 / 3 = 5.67 four-point problems. Again, we round down to the nearest whole number. Therefore, Masha can solve 5 four-point problems.

- Five-point problems: Masha can solve one problem in 5 minutes. So in 17 minutes, she can solve 17 / 5 = 3.4 five-point problems. Rounding down, Masha can solve 3 five-point problems.

Now, let's calculate the total number of points Masha will score:

- Three-point problems: Masha can solve 8 three-point problems, each worth 3 points. So the total points from three-point problems is 8 * 3 = 24.

- Four-point problems: Masha can solve 5 four-point problems, each worth 4 points. So the total points from four-point problems is 5 * 4 = 20.

- Five-point problems: Masha can solve 3 five-point problems, each worth 5 points. So the total points from five-point problems is 3 * 5 = 15.

Finally, we add up the points from each type of problem to find the total number of points Masha will score:

24 + 20 + 15 = 59

Therefore, Masha will score 59 points in 17 minutes.

Conclusion

Masha will score 59 points in 17 minutes by solving a combination of three-point, four-point, and five-point problems.