Question

Диме и маме вместе 40 лет, Диме и папе - 42 года, а Диме, маме и папе вместе 74 года. Сколько лет каждому. ( нужно решение)

Answer 1

Если Диме , папа и маме вместе 74 года,то нужно вычесть из общего возраста семьи возраст Димы и мамы,и мы получим возрасть папы.
1)74-40=34(года)-папе
Если Папе и Диме вместе 42 года,то из 42 нужно вычесть возраст отца,мы получим возраст Димы.
2)42-34=8(лет)-Диме
Если маме и Диме вместе 40 лет,то из 40 вычитаем возраст Димы мы получим возраст мамы.
3)40-8=32(года)-маме
Ответ: папе-34,Диме-8,маме-32

Answer 2

1) 74 - 40 = 34 (г.) возраст папы;
2) 42 - 34 = 8 (л.) возраст Димы;
3) 40 - 8 = 32 (г.) возраст мамы;
Ответ: возраст папы - 34 года, возраст мамы - 32 года; возраст Димы - 8 лет.

Answer 3

Problem Analysis

We are given the following information: - The combined age of Dima and his mother is 40 years. - The combined age of Dima and his father is 42 years. - The combined age of Dima, his mother, and his father is 74 years.

We need to determine the age of each individual.

Solution

Let's assume Dima's age is represented by D, his mother's age is represented by M, and his father's age is represented by F.

From the given information, we can form the following equations:

1. D + M = 40 (The combined age of Dima and his mother is 40 years) 2. D + F = 42 (The combined age of Dima and his father is 42 years) 3. D + M + F = 74 (The combined age of Dima, his mother, and his father is 74 years)

To solve these equations, we can use a method called substitution.

From equation 1, we can express M in terms of D: M = 40 - D

Substituting this value of M into equations 2 and 3, we get: D + (40 - D) + F = 42 (equation 2) D + (40 - D) + F = 74 (equation 3)

Simplifying these equations, we have: F = 2 (equation 2 simplified) D + F = 34 (equation 3 simplified)

Now, we can substitute the value of F from equation 2 into equation 3: D + 2 = 34

Solving for D, we find: D = 32

Substituting this value of D into equation 1, we can find M: M = 40 - D = 40 - 32 = 8

Finally, substituting the values of D and M into equation 2, we can find F: F = 42 - D = 42 - 32 = 10

Therefore, Dima is 32 years old, his mother is 8 years old, and his father is 10 years old.

Answer

Dima is 32 years old, his mother is 8 years old, and his father is 10 years old.