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Mathematics, 03.06.2021 21:40 Giabear23

2. Denis a cumpărat de la chioscul şcolii 4 pachete de biscuiți şi 3 pachete de napolitane, pentru care a platit 12,75 de lei. Colegul lui, Tinu, a cumpărat 5 pachete de biscuiți şi 7 pachete de napolitane de acelaşi fel şi a plătit 23,25 de lei. Cât costă un pachet de biscuiti? Dar 6 pachete de napolitane?

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