Question

ЗАДАЧИ НА УРАВНИВАНИЕ Таня на 3 года младше своей сестры, а вместе им 27 лет. Сколько лет каждой из них

Answer 1

27-3=24 - вместе им лет без 3-х лет.

24/2=12 - возраст Тани.

12+3=15(лет) - сестре Тани.

Ответ: возраст Тани 12 лет, а возраст её старшей сестры 15 лет.

Answer 2

Problem Statement

Таня на 3 года младше своей сестры, а вместе им 27 лет. Сколько лет каждой из них?

Solution

Let's assume that Tanya's age is represented by T and her sister's age is represented by S.

According to the problem statement, Tanya is 3 years younger than her sister. So we can write the equation:

T = S - 3 (Equation 1)

It is also given that the sum of their ages is 27:

T + S = 27 (Equation 2)

We can solve this system of equations to find the ages of Tanya and her sister.

Substituting Equation 1 into Equation 2, we get:

(S - 3) + S = 27

Simplifying the equation:

2S - 3 = 27

Adding 3 to both sides:

2S = 30

Dividing both sides by 2:

S = 15

Now, we can substitute the value of S back into Equation 1 to find Tanya's age:

T = 15 - 3 = 12

Therefore, Tanya is 12 years old and her sister is 15 years old.

So, Tanya is 12 years old and her sister is 15 years old.