Question

Ірині та її мамі разом 36 років, а сума років її мами та її бабусі 81 рік. Скільки років було бабусі коли народилася Ірина?

Answer 1

Надо 81 отнять 36 и вы получите ответ

Answer 2

Problem Analysis

We are given that the sum of the ages of Irina and her mother is 36 years, and the sum of the ages of her mother and her grandmother is 81 years. We need to determine the age of the grandmother when Irina was born.

Solution

Let's assume the age of Irina's mother is M years and the age of her grandmother is G years. We can set up the following equations based on the given information:

1. M + G = 81 (equation 1) 2. M + Irina's age = 36 (equation 2)

To find the age of the grandmother when Irina was born, we need to find the value of G.

Solving the Equations

Let's solve the equations to find the values of M and G.

From equation 1, we can express M in terms of G: M = 81 - G

Substituting this value of M into equation 2, we get: 81 - G + Irina's age = 36

Simplifying the equation, we have: Irina's age = 36 - 81 + G Irina's age = G - 45

Since we don't have the specific age of Irina, we cannot determine the exact age of her grandmother when Irina was born. However, we can express the age of the grandmother in terms of Irina's age.

Answer

The age of the grandmother when Irina was born can be expressed as G - 45, where G is the age of the grandmother and Irina's age is unknown.

Please note that without knowing Irina's age, we cannot determine the exact age of the grandmother when Irina was born.