Question

Брат в 4 раза старше сестры,а сестра на 9 лет моложе брата сколько лет каждому Плисс решите заранее спасибо

Answer 1

Let's solve the problem step by step.

Let's assume the age of the sister is x years. According to the problem, the brother is 4 times older than the sister. So, the age of the brother would be 4x years.

Also, the problem states that the sister is 9 years younger than the brother. This means that the age difference between the brother and sister is 9 years.

To find the age of each sibling, we can set up an equation based on the given information.

The equation can be written as: 4x - x = 9

Simplifying the equation, we have: 3x = 9

Dividing both sides by 3, we get: x = 3

So, the sister is 3 years old. To find the age of the brother, we can substitute the value of x back into the equation: 4x = 4 * 3 = 12

Therefore, the brother is 12 years old.

In summary, the sister is 3 years old, and the brother is 12 years old.