60% от 40% числа у равны 8,4. Найдите число у . 6 класс - №31341311

60% от 40% числа у равны 8,4. Найдите число у .

6 класс
- Предмет:
  Математика
- Автор:
  dandyhopkins
- 5 лет назад

Ответы 1

60% = 0,6; 40% = 0,4.
Уравнение:
0,6 · 0,4у = 8,4
0,4у = 8,4 : 0,6
0,4у = 14
у = 14 : 0,4
у = 35
- Автор:
  isaíaslc0p
- 5 лет назад
- 0
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