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Timpul in care 8 muncitori termina o lucrare daca 10 muncitori termina aceeasi lucrare în 5 ore

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[tex]\bf 10m -------- 5h\\ \\ 8m --------- xh\\\rule{130}{0.8}\\Avem\ propor\c{\bf t}ionalitate\ invers\breve a \Rightarrow \dfrac{10}{8}=\dfrac{x}{5} \Rightarrowx=\dfrac{5\cdot10}{8}=\dfrac{\ 50^{(2}}{8}=\dfrac{25}{4}h=\\ \\ \\ =\dfrac{24h60min}{4}=6h\ 20min[/tex]