Question

У Сережи в коллекции в 3 раза меньше марок чем у Васи, а у Андрея в 2 раза больше чем у Васи. сколько марок у каждого, если у Андрея на 80 марок больше чем у Сережи?

Answer 1

Если методом подбора то тогда 16 у серёжи 16*3=48 48*2=96у андрея 96-16=80у андрея на 80 больше

Answer 2

Problem Analysis

We are given the following information: - The number of stamps in Sergey's collection is 3 times less than the number of stamps in Vasya's collection. - The number of stamps in Andrei's collection is 2 times more than the number of stamps in Vasya's collection. - Andrei has 80 more stamps than Sergey.

We need to determine the number of stamps each person has.

Solution

Let's assume that Vasya has x stamps in his collection.

According to the given information: - Sergey has 3 times fewer stamps than Vasya, so Sergey has x/3 stamps. - Andrei has 2 times more stamps than Vasya, so Andrei has 2x stamps. - Andrei has 80 more stamps than Sergey, so 2x = x/3 + 80.

To solve this equation, we can multiply both sides by 3 to eliminate the fraction: 6x = x + 240.

Now, we can solve for x: 6x - x = 240, 5x = 240, x = 48.

Therefore, Vasya has 48 stamps, Sergey has 48/3 = 16 stamps, and Andrei has 2 * 48 = 96 stamps.

Answer

Vasya has 48 stamps, Sergey has 16 stamps, and Andrei has 96 stamps.