Question

Деду,отцу и сыну вместе 100лет .А мне с сыном вместе 45лет -отвечал отец, а сын на 25 лет моложе меня .Сколько каждому из них.

Answer 1

Деду 100-45=55 лет сыну10 лет, отцу35 лет.

Answer 2

Calculating the Ages of the Grandfather, Father, and Son

To solve this problem, we can use a system of equations to represent the given information and find the ages of the grandfather, father, and son.

Let's denote: - G as the age of the grandfather, - F as the age of the father, and - S as the age of the son.

We have the following information: 1. The sum of their ages is 100 years: G + F + S = 100. 2. The father's age plus the son's age is 45 years: F + S = 45. 3. The son is 25 years younger than the person asking the question: S = (You - 25).

Solving the Equations

We can solve these equations to find the ages of the grandfather, father, and son.

1. From the second equation, we can express F in terms of S: F = 45 - S. 2. Substituting F from the second equation into the first equation gives: G + (45 - S) + S = 100. 3. Simplifying the equation gives: G + 45 = 100. 4. Therefore, G = 100 - 45. 5. So, G = 55.

Now that we have the age of the grandfather, we can find the ages of the father and the son.

6. From the second equation, F = 45 - S. 7. Substituting G = 55 and S = (You - 25) into the equation gives: 55 + (45 - (You - 25)) + (You - 25) = 100. 8. Simplifying the equation gives: You = 35.

Conclusion

- The age of the grandfather is 55 years. - The age of the father is 35 years. - The age of the son is 10 years.