Question

ПОМОГИТЕ СРОЧНО!!!! Если из возраста бабушки вычесть 14 лет и результат умножить на 2, то получится число, которое в 3 раза больше возраста мамы. Сколько лет бабушке, если маме 40? С решением пожалуйста!!!!,

Answer 1

Ответ:

Бабушке 74 года

Пошаговое объяснение:

Пусть х - возраст бабушки, тогда получаем:

(х - 14)×2=3×40

2х - 28 = 120

2х = 120 + 28

х = 148 : 2

х = 74

Проверка:

(74 - 14) × 2 = 40 × 3

Answer 2

Ответ:

40×3=120

120÷2=60

60+14=74 года

Answer 3

Problem Analysis

We are given that if we subtract 14 years from the grandmother's age and multiply the result by 2, we get a number that is 3 times the mother's age. We need to find the grandmother's age when the mother is 40 years old.

Solution

Let's assume the grandmother's age is represented by G and the mother's age is represented by M.

According to the given information, we have the following equation:

(G - 14) * 2 = 3 * M

We also know that M = 40.

Substituting the value of M into the equation, we get:

(G - 14) * 2 = 3 * 40

Simplifying the equation:

2(G - 14) = 120

Dividing both sides of the equation by 2:

G - 14 = 60

Adding 14 to both sides of the equation:

G = 60 + 14

G = 74

Therefore, the grandmother is 74 years old.

Answer

The grandmother is 74 years old if the mother is 40 years old.

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