сумма двух чисел равна 85. Сумма 40% одного из них и 2/3 другого равна 46. найдите эти числа.

сумма двух чисел равна 85. Сумма 40% одного из них и 2/3 другого равна 46. найдите эти числа.
- Предмет:
  Математика
- Автор:
  aliviastephens
- 6 лет назад

Ответы 2

Первое число х ; второе число ( 85 - х ) 0,4х + 2/3•( 85 - х ) = 460,4х = 2/5х Общий знаменатель 152х•3 + 2•5•( 85 - х ) = 46 • 15 6х + 850 - 10х = 690 - 4х = 690 - 850 х = - 160 : ( - 4 ) х = 40 ( первое число ) 85 - 40 = 45 ( второе число ) Ответ числа 40 и 45
- Автор:
  carly7iaq
- 6 лет назад
- 0
85= 100% 40%= 0,41) 85-46=39 1 число 85×0,4= 44 2 число
- Автор:
  miriamlowe
- 6 лет назад
- 0
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Buttonwood Street, Philadelphia, where Frank Cowperwood spent the first ten years of his life, was a lovely place for a boy to live in. There were mainly red brick houses there with small marble steps leading up to the front doors. There were trees in the street — a lot of them. Behind each house there was a garden with trees and grass and sometimes flowers.
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As his position grew more responsible, his business connections increased. He already knew a number of rich businessmen who dealt with the bank where he worked. The brokers knew him as representing a well-known film and considered him to be a most reliable person.
Young Cowperwood took an interest in his father's progress. He was quite often allowed to come to the bank on Saturdays, when he would watch with great interest the quick exchange of bills. He wanted to know where all the different kinds of money came from, and what the men did with all the money they received. His father, pleased at his interest, was glad to explain, so that even at this early age — from ten to fifteen — the boy gained a wide knowledge of the condition of the country financially. He was also interested in stocks and bonds, and he learned that some stocks and bonds were not even worth the paper they were written on, and others were worth much more than their face value showed.
At home also he listened to considerable talk of business and financial adventure.
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Just at this time there came to the Cowperwoods an uncle, Seneca Davis, who had not appeared in the life of the family before.
Henry Cowperwood was pleased at the arrival of this rather rich relative, for before that Seneca Davis had not taken much notice of Henry Cowperwood and his family.
This time, however, he showed much more interest in the Cowperwoods, particularly in Frank.
"How would you like to come down to Cuba and be a planter, my boy?" he asked him once.
"I am not so sure that I'd like to," replied the boy.
"Well, that's frank enough. What have you against it?"
"Nothing, except that I don't know anything about it."
"What do you know?" The boy smiled, "Not very much, I guess."
"Well, what are you interested in?"
"Money."
He looked at Frank carefully now. There was something in the boy ... no doubt of it.
"A smart boy!" he said to Henry, his brother-in-law. "You have a good family."
Uncle Seneca became a frequent visitor to the house and took an increasing interest in Frank.
"Keep in touch with me," he said to his sister one day. "When that boy gets old enough to find out what he wants to do, I think I'll help him to do it." She told him she was very grateful. He talked to Frank about his studies, and found that the boy took little interest in books or most of the subjects he had to take at school.
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"Well, you can't leave school much before sixteen. You'll do better if you stay until seventeen or eighteen. It can't do you any harm. You won't be a boy again."
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"Yes. sir."
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сумма двух чисел равна 85. Сумма 40% одного из них и 2/3 другого равна 46. найдите эти числа.

Ответы 2

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