Предмет: Математика, автор: genekevdok

Решите задачу
для приготовления вишневого варенья на 2 части вишни берут 3 части сахара (по массе) Сколько вишни и сколько сахара пошло на варенье, если сахара пошло на 7 кг 600 грамм больше чем вишни?

Ответы

Автор ответа: anyafilatova
0
I способ:Пусть масса 1 части х грамм, тогда 2х грамм - это 2 части вишни, а 3х грамм - это 3 части сахарасогласно этим данным составим уравнение:2х+7 600=3х3х-2х=7 600х=7 600 (г) - 1 часть.2х=2·7 600=15 200 (г) или 15кг 200 г - израсходуют вишни для приготовления варенья.3х=3·7 600=22 800 (г) или 22кг 800 г - израсходуют сахара для приготовления варенья.II способ:1 кг=1 000 г ⇒ 7кг600г=7·1 000г+600г=7 000г+600г=7 600г1) 7 600·2=15 200 (г) или 15кг 200 г - израсходуют вишни для приготовления варенья.2) 7 600·3=22 800 (г) или 22кг 800 г - израсходуют сахара для приготовления варенья.Ответ: 15кг 200г вишни и 22кг 800г сахара израсходуют для приготовления варенья.
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