Предмет: Математика, автор: shangina0202

20% от 40% числа C равны 5,6. Найдите число C .

Ответы

Автор ответа: Raider468

0

0.2 * 0.4 * C = 5.6 0.08 C = 5.6 C = 5.6 : 0.08 C = 70

Автор ответа: hot0808

0

Пусть х - само число. Тогда 0,4х - 40% от числа. А 0,2*0,4х =0,08х - это 20% от 40% всего числа. Тогда
0,08х = 5,6
х = 5,6/0,08
х = 70
Ответ: С=70

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