Robin will need 20 pages of 10 stickers each. Dividing up the 180 stickers she already has into equal amounts of ten on individual pages, will add her up to 18 pages of stickers. She will need 20 more stickers to accumulate a total of 200: aka: 20 pages of stickers filled with ten each.
The answer is a video that answers the question, "Is mars Really Red?" because the passage talks about the color of Mars and how it's known as a red planet even though it's more of a butterscotch color.
