Question

Известно что 3/5 класса пошли в кино, 2/3 класса пошли на выставку. Сколько детей в классе если известно что детей больше 25 но меньше 35? С решением пожалуйста. За ранее спасибо!

Answer 1

Пусть х-число учеников в классе. 3/5 класса-это (3х) /5 человек, 2/3 класса-это (2х) /3 человек. То есть 3х должно нацело делиться на 5. Т. к. 3 не делится, значит х должно нацело делиться на 5. Аналогично, 2х должно нацело делиться на 3. Т. к. 2 не делится на 3, следовательно х должно делиться на 3. Итак, получили, что х делится нацело на 5 и на 3, и по условию х от 25 до 35. Какое число между 25 и 35 делится на 5? Только 30. И оно же делится на 3.
Ответ: 30 учащихся

Answer 2

Problem Analysis

We are given that 3/5 of the class went to the cinema and 2/3 of the class went to an exhibition. We need to determine the number of children in the class, knowing that there are more than 25 but fewer than 35 children.

Solution

Let's assume that the total number of children in the class is x.

According to the given information: - 3/5 of the class went to the cinema, which means (3/5)x children went to the cinema. - 2/3 of the class went to an exhibition, which means (2/3)x children went to the exhibition.

Since the total number of children in the class is between 25 and 35, we can set up the following inequality: 25 < x < 35

To find the value of x, we can solve the following equation: (3/5)x + (2/3)x = x

Simplifying the equation: (9/15)x + (10/15)x = x (19/15)x = x 19x = 15x 4x = 0 x = 0

However, this solution doesn't make sense because we know that there are more than 25 children in the class. Therefore, there seems to be an error in the given information or the problem statement.

Unfortunately, I couldn't find any additional information or sources to help resolve this discrepancy. It's possible that the given information is incorrect or incomplete.

Please double-check the information provided or provide any additional details if available, and I'll be happy to assist you further.