Respuesta :
divide 54 inches by 9 inches which would be 6 inches therefore she would have to make her collage 6 inches wide to fit all of her photographs.
(to check this, all you have to do is multiply 9 by 6, then you get 54, which proves that this is correct.)
(to check this, all you have to do is multiply 9 by 6, then you get 54, which proves that this is correct.)