Question

Сколько лет твоему отцу? Спросили у Пети. Он ответил так :я в трое моложе папы, но зато втрое старше своей сестры, а папе и сестре вместе 50 лет. Сколько лет отцу. Реши задачи арифмитически

Answer 1

Есть два варианта решения, через Х или через части. Но в обоих случаях не получается целых чисел. Либо есть ошибка в условии, либо здесь допустимы дробные числа, округление до десятых. А в вопросе скорее всего слово МОЕМУ, а не Твоему.
1вариант:
сестра -1 часть, мне-2 части, отцу-6частей. Сестра и отец вместе -7частей. 1)1=6=7(ч) -отец и сестра
2)50:7=7,14(лет) -сестре
3)7,14*6=42,84(лет) -отцу.

Answer 2

Problem Analysis

We are given the following information: - Petya is three times younger than his father. - Petya is three times older than his sister. - The combined age of Petya's father and sister is 50 years.

We need to determine the age of Petya's father.

Solution

Let's assume Petya's age is represented by P, his father's age is represented by F, and his sister's age is represented by S.

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

1. P = 3F (Petya is three times younger than his father) 2. P = 3S (Petya is three times older than his sister) 3. F + S = 50 (The combined age of Petya's father and sister is 50 years)

We can solve this system of equations to find the values of P, F, and S.

Substituting equation 1 into equation 2, we get:

3F = 3S

Dividing both sides by 3, we get:

F = S

Now we can substitute F = S into equation 3:

F + F = 50

Combining like terms, we get:

2F = 50

Dividing both sides by 2, we get:

F = 25

Therefore, Petya's father is 25 years old.

Answer

Petya's father is 25 years old.