Предмет: Математика, автор: Нюша2400

Какую часть стены рабочий оклеивает обоями за 1 час,ели всю стену он оклеивает за 1(целую) 13 часа?

Ответы

Автор ответа: Опыт

0

составляем пропорцию
1 - 4/3
x - 1

x:1=1:4/3
x=3/4 ответ за 1 час рабочий оклеивает 3/4 стены

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