Math Venn diagram

Question

November is peanut butter month. A small survey asked kids how they liked their peanut butter. Forty kids said they liked PB&J’s( peanut butter and jelly sandwiches). Forty seven kids said they liked peanut butter cookies. If thirty one kids like only the cookies, how many kids like only the PB & J’s ?

Answer 1

Answer 2

From what is presented:

"Forty kids said they liked PB&J’s( peanut butter and jelly sandwiches)."

Everyone else liked cookies.