Предмет: Математика, автор: kesa

Найдите число а,если 4/7 от а равны 40%от 80.

Ответы

Автор ответа: мариника

0

4а/7=0,4*80

4а/7=32

а=32*7/4

а=56

Автор ответа: triolana

0

сколько составляют 40% от 80

80:100*40=32

найдём а

32*7:4= 56

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