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World Languages, 22.11.2021 22:20 kaliaakh

Numa sala de aula há 10 rapazes e 12 raparigas. Há 9 alunos que usam óculos. Sabendo que o número de rapazes com óculos é o dobro do das raparigas, descobre quantas são as raparigas que não usam óculos. (pergunta da minha irmã do 3º ano)

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