Question

Математика 2класс стр 80 задача6 Диме и маме вместе 40лет,диме и папе -42года,а диме,маме и папе вместе 74года.сколько лет каждому?

Answer 1

1) 74-40=34(г.)- папе 2) 74-42=32(г.)- маме 3) 74-(34+32)=8 (л.) Ответ: 34 года папе, 32 года маме, 8 лет Диме.

Answer 2

Если всем вместе 74 года, то
папе 74-40=34(года),
маме 74-42=32(года),
сыну 74-(34+32)=74-66=8(лет)

Answer 3

Problem Statement

The problem states that Dima and his mom have been together for 40 years, Dima and his dad have been together for 42 years, and Dima, his mom, and his dad have been together for 74 years. We need to find out how old each person is.

Solution

Let's assume Dima's age is represented by D, his mom's age is represented by M, and his dad's age is represented by P.

According to the problem statement, we have the following information:

1. Dima and his mom have been together for 40 years: D + M = 40. 2. Dima and his dad have been together for 42 years: D + P = 42. 3. Dima, his mom, and his dad have been together for 74 years: D + M + P = 74.

To solve this system of equations, we can use substitution or elimination method. Let's use the elimination method.

We can subtract equation 1 from equation 3 to eliminate Dima's age: (D + M + P) - (D + M) = 74 - 40.

Simplifying the equation, we get: P = 34.

Now, we can substitute the value of P into equation 2 to find Dima's age: D + 34 = 42.

Simplifying the equation, we get: D = 8.

Finally, we can substitute the values of D and P into equation 1 to find Dima's mom's age: 8 + M = 40.

Simplifying the equation, we get: M = 32.

Therefore, Dima is 8 years old, his mom is 32 years old, and his dad is 34 years old.

Answer

Dima is 8 years old, his mom is 32 years old, and his dad is 34 years old.

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