Question

На кухне табуретки и стулья. У каждой табуретки 3 ноги, у каждого стула 4 ноги. Когда на всех табуретках и стульях сидят люди, у которых по 2 ноги, в комнате всего 38 ног. Сколько стульев в комнате? СРОЧНО!!!!!!

Answer 1

Если все сидели на табуретках, то у них было бы 5 ног на человека и табуретки. Если все сидели на табуретках, то на 5 человек пришлось бы 39 ног, то есть 3-х ног не хватило бы до заданного количества ног. Значит, людей 5 человек, из них на стульях сидят 3, а на табуретках - 2.
ОТВЕТ: на кухне 3 стула.

Answer 2

Calculation of the Number of Chairs in the Room

To determine the number of chairs in the room, we need to analyze the given information. Let's break it down step by step:

1. Each stool has 4 legs. 2. Each stool has 2 people sitting on it, so there are 2 legs occupied per stool. 3. Each stool has 4 - 2 = 2 unoccupied legs.

Similarly:

1. Each stool has 3 legs. 2. Each stool has 2 people sitting on it, so there are 2 legs occupied per stool. 3. Each stool has 3 - 2 = 1 unoccupied leg.

Now, we know that the total number of legs in the room is 38. Let's calculate the number of stools and chairs:

- The number of stool legs = (number of stools) x (number of legs per stool) = (number of stools) x 2. - The number of chair legs = (number of chairs) x (number of legs per chair) = (number of chairs) x 4.

We can set up the following equation based on the given information:

(number of stools) x 2 + (number of chairs) x 4 = 38.

Let's solve this equation to find the number of chairs in the room.

Calculation:

2(number of stools) + 4(number of chairs) = 38.

Rearranging the equation:

2(number of stools) = 38 - 4(number of chairs).

Dividing both sides by 2:

(number of stools) = (38 - 4(number of chairs)) / 2.

Now, we can substitute different values for the number of chairs and calculate the corresponding number of stools:

- If there are 0 chairs, then the number of stools = (38 - 4(0)) / 2 = 38 / 2 = 19. - If there is 1 chair, then the number of stools = (38 - 4(1)) / 2 = 34 / 2 = 17. - If there are 2 chairs, then the number of stools = (38 - 4(2)) / 2 = 30 / 2 = 15. - If there are 3 chairs, then the number of stools = (38 - 4(3)) / 2 = 26 / 2 = 13. - If there are 4 chairs, then the number of stools = (38 - 4(4)) / 2 = 22 / 2 = 11. - If there are 5 chairs, then the number of stools = (38 - 4(5)) / 2 = 18 / 2 = 9. - If there are 6 chairs, then the number of stools = (38 - 4(6)) / 2 = 14 / 2 = 7. - If there are 7 chairs, then the number of stools = (38 - 4(7)) / 2 = 10 / 2 = 5. - If there are 8 chairs, then the number of stools = (38 - 4(8)) / 2 = 6 / 2 = 3. - If there are 9 chairs, then the number of stools = (38 - 4(9)) / 2 = 2 / 2 = 1.

Based on these calculations, we can conclude that the number of chairs in the room is 8.

Please let me know if you need any further assistance!