derekprokesch derekprokesch

21-05-2023
Mathematics

contestada

Despús-ahir van eixir a la venda les entrades per a un
concert i, en aquest mateix dia, se'n va vendre un terç;
ahir, una quarta part, i hui, s'han venut les 200 restants.
Quantes entrades es van posar a la venda?

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