Answer :

luana
[tex]\frac{10}{18}=\frac{c}{4,5}\\\\cross\ multiplication\\\\ 4,5*10=18c\\\\ 45=18c\ \ \ \ | divide\ by\ 18\\\\ c=\frac{45}{18}=2\frac{1}{2}\\\\\ \boxed{c=2\frac{1}{2}}[/tex]

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