White light shines on both. What color will paper A and B appear to be?

A appears G or Green and B appears as a mix of Green and Blue.

Explanation:

An object's color is determined by the light that it reflects. White light is made up of all of the colors in the rainbow. Since Example A absorbs ROYBIV, the only color that is reflected is Green. In example B, Red is absorbed, so Green and Blue are reflected. Printers use these same ideas to mix colors and give us a wider variety of colors. They use Cyan, which is a mixture of Blue and Green in the absence of Red.

it doesn't. it was imagined up in the middle ages.