Folosim regula de 3 simpla
3,6kg......9,5
1,8kg........x
cum avem inversa proportionalitate vom inversa un raport
[tex] \frac{1.8}{3.6} = \frac{9.5}{x} \\ 1.8 \times x = 9.5 \times 3.6 \\ x = \frac{9.5 \times 3.6}{1.8} \\ x = \frac{34.2}{1.8} \\ x = 19[/tex]
