Предмет: Математика, автор: Semisalova

помогите!!! за 5 литров масла заплатили 132 р. сколько надо заплатить за двенадцать с половиной литров масла?

Ответы

Автор ответа: CHuvaCK21

Моя любимая пропорция подъехала

5/132=12.5/x

12,5*132/5=330 р.

ответ: надо заплатить 330 рублей

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