Question

Галя и Марина отмечают свой день рождения 21 января. Гале было 5 лет. Когда родилась Марина. Сколько лет будет Марине, когда Галя будет в два раза ее старше?

Answer 1

Ей будет 5 лет если что могу написать в комментариях решение

Answer 2

Марине исполнится 21 января пять лет.

Answer 3

Calculation of Marina's Birthdate and Age Difference with Galya

To determine Marina's birthdate and her age difference with Galya, we need to consider the information provided.

According to the information given, Galya celebrates her birthday on January 21st and she was 5 years old at that time. However, the birthdate of Marina is not explicitly mentioned. We need to calculate Marina's birthdate based on the given information.

To find Marina's birthdate, we can subtract Galya's age (5 years) from the date of their shared birthday (January 21st). This will give us the date when Marina was born.

Let's calculate Marina's birthdate:

- Galya's birthday: January 21st - Galya's age: 5 years

To find Marina's birthdate, we subtract Galya's age from the shared birthday:

January 21st - 5 years = January 16th

Therefore, Marina was born on January 16th.

Now, let's calculate the age difference between Marina and Galya when Galya is twice as old as Marina.

To find the age difference, we need to determine the age at which Galya will be twice as old as Marina. Let's assume this age is represented by 'x'.

When Galya is twice as old as Marina, the age difference between them will be 'x - Marina's age'.

Since Galya is currently 5 years old, we can set up the following equation:

Galya's age + (x - Marina's age) = 2 * Marina's age

Substituting the known values:

5 + (x - 0) = 2 * 0

Simplifying the equation:

5 + x = 2x

Rearranging the equation:

x = 5

Therefore, when Galya is twice as old as Marina, Galya will be 5 years old and Marina will be 2.5 years old.

To summarize: - Marina's birthdate is January 16th. - When Galya is twice as old as Marina, Galya will be 5 years old and Marina will be 2.5 years old.

Please let me know if you need any further clarification or assistance!