Предмет: Математика, автор: dzeraartur

Помогите пожалуйста решить задачу)

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Автор ответа: akkoney

1

Ответ:

10 задач-32минут.

140 задач-?

32:10=3,2

3,2*140=448 минут

ответ: 448 минут потребуется для составления 140 задач.

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