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80h₁₊60h₂=1440
Método del rombo
80ₓ20-1440/80-60
1600-1440/20
160/20
8h₂ ∴ 20-8=12h₁
⇒ Compro 8 cuadernos de ⇒ Compro 12 cuadernos de
60 hojas. 80 hojas.+
Rpta: Compro 12 cuadernos de 80 hojas