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Шестьдесят мандаринов разложили в 3 разных пакета: в первый пакет положили на 5 мандаринов больше , чем во второй , а во второй на 10 мандаринов меньше , чем в третий. Сколько мандаринов в каждом пакете?
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Предмет:
Математика -
Автор:
bender - 5 лет назад
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Ответы 1
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a=b+5c=b+10a+b+c=60b+5+b+b+10=603b+15=603b=45b=45/3b=15a=15+5=20c=15+10=25Ответ: 20, 15, 25
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Автор:
baldie1eki - 5 лет назад
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1) Sally had been studying at a design college for a year and, like most students, she did not have much money. It was going to be her mother's birthday soon, and she wanted to buy her a present that would be nice and useful but not too expensive.
Sally's college was in London, but she had been living in the country for many years, so every day she had an hour's journey by train in the morning, and the same in the evening.
At lunch time one day, a week before her mother's birthday, she decided to have a quick sandwich and a cup of coffee instead of her usual meal in the college hall, and then go shopping near her college to buy her mother a nice present. When she had been looking for half an hour, she came across a shop that was selling umbrellas cheap, and decided that an umbrella would be a nice present, since her mother had lost hers the month before.
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