Question

В семье Ивановых все ее члены родились в один день – 10 марта. Однажды они сложили возраст папы и сына, потом вычли возраст мамы и дочери и получили число 15. Какое число у них получится, если сложить год рождения папы и год рождения сына и из полученной суммы сначала вычесть год рождения мамы, а потом – год рождения дочери?

Answer 1

ДУМАЕМ
Вычесть сумму = вычесть оба слагаемых.
РЕШЕНИЕ
Обозначим неизвестные буквами - О-отец, М-мать, С-сын,  Д-дочь.
1) (О+С) - (М+Д) = 15
2) ((О+С) - М) -Д) = ? = 15 - получили те же самые 15 - ОТВЕТ

Answer 2

Problem Analysis

The problem states that all the members of the Ivanov family were born on the same day, which is March 10th. The problem also provides information about the ages of the father, son, mother, and daughter. We need to find the result of a specific arithmetic operation involving the birth years of the father, son, mother, and daughter.

Solution

To solve this problem, we need to follow the given steps: 1. Add the birth years of the father and son. 2. Subtract the birth years of the mother and daughter from the sum obtained in step 1. 3. The result of step 2 should be equal to 15.

Let's calculate the result step by step:

1. Add the birth years of the father and son: - Let's assume the birth year of the father is F and the birth year of the son is S. - The sum of the birth years of the father and son is F + S.

2. Subtract the birth years of the mother and daughter from the sum obtained in step 1: - Let's assume the birth year of the mother is M and the birth year of the daughter is D. - The result of step 2 is (F + S) - (M + D).

3. The result of step 2 should be equal to 15: - Therefore, we have the equation (F + S) - (M + D) = 15.

Now, let's find the result by substituting the values from the given information.

Calculation

From the given information, we know that all family members were born on March 10th. However, we don't have specific birth years for each family member. Therefore, we cannot calculate the exact result without additional information.

To proceed further, we need the birth years of the father, son, mother, and daughter. If you provide the birth years, I can help you calculate the result.

Please provide the birth years of the father, son, mother, and daughter so that I can assist you further.