Предмет: Математика, автор: бэтма

В роще растут берёзы, сосны и дубы, всего 615 деревьев. Берёзы составляют одну треть всех деревьев,а дубы минус одну пятую всех деревьев. Сколько всего сосен в этой роще?

Ответы

Автор ответа: Dascha11111111111

0

615:3=205 берез растут в роще
615:5=123 дуба в роще
615-(205+123)=615-328=287 сосен растут в роще
Ответ всего 287 сосен растут в роще.

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