Question

Пжл помогите) а) Маша,Даша,Катя и Оля учатся в одной школе ,но в разных классах: 7а,7б,8а. Катя и Оля - одноклассницы . Маша и Катя учились в классах с одинаковой литерой . Маша и Даша были ученицами 7 класса. Кто в каком классе учился ? б)в семье четверо детей - 5,8,15 и 13 лет. их имена Аня.Боря.Валя и Галя. Валя ходит в детский сад. Аня старше Бори. Сумма возрастов Ани и Вали делится на 3. Кому сколько лет?

Answer 1

А) Маша и Даша в 7 классе, причем Маша в 7а, т.к. у них буквы класса с Катей одинаковые, значит Даша в 7б, а Катя и Оля в 8а
б) Валя ходит в д/с, ему 5 лет, Аня старше Бори, значит ей 13 или 15, а Боре 8 или 13
проверим суммы возрастов, которые делятся на 3,
13+5=18 делится, 15+13=28,не делится на 3, значит Ане 13, Боре 8, Гале 15

Answer 2

Answer:

a) According to the given information, Masha, Dasha, Katya, and Olya study in the same school but in different classes: 7a, 7b, and 8a. Katya and Olya are classmates. Masha and Katya studied in classes with the same letter. Masha and Dasha were students in the 7th grade.

Based on this information, we can deduce the following:

- Masha and Dasha were in the 7th grade. - Katya and Olya were in different classes, so they were not in the 7th grade. - Masha and Katya studied in classes with the same letter, so they were not in the 8th grade. - Therefore, Katya and Olya were in the 8th grade.

So, the final answer is:

- Masha studied in the 7th grade. - Dasha studied in the 7th grade. - Katya studied in the 8th grade. - Olya studied in the 8th grade.

b) In a family, there are four children with ages 5, 8, 15, and 13 years. Their names are Anya, Borya, Valya, and Galya. Valya goes to kindergarten. Anya is older than Borya. The sum of Anya's and Valya's ages is divisible by 3.

Based on this information, we can deduce the following:

- Valya goes to kindergarten, so Valya is 5 years old. - Anya is older than Borya, so Anya cannot be 5 years old. - The sum of Anya's and Valya's ages is divisible by 3, so the possible combinations are (8, 13) or (15, 8).

Since Anya is older than Borya, the combination (15, 8) is not possible. Therefore, the final answer is:

- Anya is 13 years old. - Borya is 8 years old. - Valya is 5 years old.

Please let me know if there is anything else I can help you with!