[tex]\\ \tt\longmapsto \dfrac{Ahmed}{Nora}[/tex]
[tex]\\ \tt\longmapsto \dfrac{450}{400}[/tex]
[tex]\\ \tt\longmapsto \dfrac{9}{8}[/tex]
[tex]\\ \tt\longmapsto 9:8[/tex]
Ratio
[tex]\\ \tt\longmapsto \dfrac{400}{850}[/tex]
[tex]\\ \tt\longmapsto 8:17[/tex]