A moth at about eye level is 12 cm in front of a plane mirror; you are behind the moth, 28 cm from the mirror.

A moth at about eye level is 12 cm in front of a plane mirror; you are behind the moth, 28 cm from the mirror. For what distance must you focus your eyes to see the image of the moth in the mirror; that is, what is the distance between your eyes and the apparent position of the image?