Question

арадаем зв. На двух полках находится 12 книг. На вторую полку переложи- пи с первой столько книг, сколько лежат на второй. В итоге ко- личество книг на трех полках уравнялось. Сколько книг было на каждой полке? Задачи, решаемые методом предположения Старинная китайская задача. В клетке находятся фазаны и кролики, Общее число голов равно 35, а ног - 94. Сколько фазанов и сколько кроликов было в клетке? Решение предположим, что к потолку клетки подвесили морковки. Тогда все кролики, для того чтобы дотянуться до еды, встанут на задние лапки и поднимут передние. Сколько ног в этот момент будет стоять на земле? Ясно, что общее число всех ног, оставшихся на полу, равно 35 2 = 70. = Но по условию, общее число ног всех животных равно 94. Где остальные? Понятно, что не учтены 94 - 70 = 24 передние лапки кроликов. Следователь- но, кроликов в клетке было 24 2 = 12. Тогда число фазанов в клетке было соответственно равно 35 - 12 = 23 Omeem в клетке было 23 фазана и 12 кроликов.​

Answer 1

Ответ:

ответ мне скинул мой одноклассник если не правильно то сорян

Answer 2

Problem 1: Books on Shelves

Let's solve the problem of books on shelves. We are given that there are 12 books on two shelves. We need to rearrange the books so that the number of books on the second shelf is equal to the number of books on the first shelf. In the end, the total number of books on the three shelves should be the same.

Let's assume that there are x books on the first shelf. According to the problem, we need to move the same number of books from the first shelf to the second shelf. Therefore, the number of books on the second shelf will also be x.

After the rearrangement, the total number of books on the three shelves will be: x + (12 - x) + x = 12.

Simplifying the equation, we get: 2x = 12.

Solving for x, we find: x = 6.

Therefore, there were 6 books on each shelf initially.

Problem 2: Pheasants and Rabbits

Let's solve the problem of pheasants and rabbits in a cage. We are given that the total number of heads is 35 and the total number of legs is 94. We need to determine the number of pheasants and rabbits in the cage.

Let's assume that all the animals in the cage are standing on the ground. In this case, the total number of legs would be 35 * 2 = 70.

However, we are given that the total number of legs is 94. This means that some of the animals are not standing on the ground. These animals are the rabbits, as they can stand on their hind legs and lift their front legs to reach the food.

To find the number of rabbits, we need to subtract the number of legs on the ground (70) from the total number of legs (94). This gives us: 94 - 70 = 24.

Since each rabbit has 4 legs, the number of rabbits can be found by dividing the number of extra legs by 4: 24 / 4 = 6.

Therefore, there were 6 rabbits in the cage.

To find the number of pheasants, we subtract the number of rabbits from the total number of animals: 35 - 6 = 29.

Therefore, there were 29 pheasants in the cage.

In conclusion, there were 29 pheasants and 6 rabbits in the cage.

I hope this helps! Let me know if you have any further questions.