Respuesta :
[tex] \frac{12}{x} = \frac{30}{100} [/tex]
then cross multiply which gives you
[tex]30x=1200[/tex] divide each side by 30 to make the x by itself
which gives you the answer x=40
then cross multiply which gives you
[tex]30x=1200[/tex] divide each side by 30 to make the x by itself
which gives you the answer x=40