Answer :
[tex]a) \\ \\ \frac{2}{4} = \frac{N}{12} \\ \\ 24=4N \\ \\ N=6 \\ \\ b) \\ \\ \frac{6}{10} = \frac{12}{N} \\ \\ 6N=120 \\ \\ N=20 \\ \\ \\ \framebox[1.1\width]{Succes !} \par
[/tex]
[tex] \frac{2}{4} = \frac{n}{12}
[/tex]
[tex]12 * \frac{2}{4} = \frac{n}{12} * 12[/tex]
[tex]6 = n[/tex]
[tex] \frac{6}{10} = \frac{12}{n} [/tex]
[tex] \frac{1}{12} * \frac{6}{10} = \frac{12}{n} * \frac{1}{12} [/tex]
[tex]20 = n[/tex]
[tex]12 * \frac{2}{4} = \frac{n}{12} * 12[/tex]
[tex]6 = n[/tex]
[tex] \frac{6}{10} = \frac{12}{n} [/tex]
[tex] \frac{1}{12} * \frac{6}{10} = \frac{12}{n} * \frac{1}{12} [/tex]
[tex]20 = n[/tex]
