Предмет: Математика, автор: erikhurinov

Пух, Сова и Пятачок съели коробку конфет. Пух съел половину того, что было в коробке. Сова съела 12 конфет. Пятачку досталось в 5 раз меньше конфет, чем Сове и Пуху вместе. Сколько конфет съел Пух?

Ответы

Автор ответа: Аноним
2

Ответ:

Пусть всех конфет было х, тогда Пух съел х/2 конфет, а Пятачок съел: (х/2+12)/5, составим уравнение:

(х/2+12)/5+х/2+12=х

(х/2+12)/5=х–х/2–12

(х/2+12)/5=х/2–12

(х/2+12)/5=(х–24)/2

Перемножаем крест накрест:

5(х–24)=2(х/2+12)

5х–120=х+24

5х–х=24+120

4х=144

х=144÷4

х=36

Всех конфет было 36 штук, и если Пух съел половину, то это в 2 раза меньше 36÷2=18 конфет

Пух съел-18конфет

Пятачок-6конфет

Пошаговое объяснение:

Похожие вопросы
Предмет: Русский язык, автор: ольга108
Предмет: Английский язык, автор: rex13
Помогите перевести текст
Informed citizens of our information-dependent society shoud be computer-literate, which means that they should be able to use computers as everyday problem-solving devices. They should be aware of the potential of computers to influence the quality of life.
There was a time when only priviliged people had an opportunity to learn the basics, called the three R's: reading, writing, and arithmetics. Now, as we are quickly becoming an information-becoming society, it is time to restate this right as the right to learn reading, writing and computing. There is little doubt that computers and their many applications are among the most significant technical achievements of the century. They bring with them both economic and social changes. "Computing" is a concept that embraces not only the old third R, arithmetics, but also a new idea — computer literacy.
In an information society a person who is computer-literate need not be an expert on the design of computers. He needn't even know much about how to prepare programs which are the instructions that direct the operations of computers. All of us are already on the way to becoming computer-literate. Just think of your everyday life. If you receive a subscription magazine in the post-office, it is probably addressed to you by a computer. If you buy something with a bank credit card or pay a bill by check, computers help you process the information. When you check out at the counter of your store, a computer assists the checkout clerk and the store manager. When you visit your doctor, your schedules and bills and special services, such as laboratory tests, are prepared by computer. Many actions that you have taken or observed have much in common. Each relates to some aspect of a data processing system.
Предмет: Русский язык, автор: zhanarakah