Abox in a college bookstore contains books, and each book in the box is a history book, an english book or science book. if one third of these books are history books and one sixth are english books, what fraction of the books are science books? how do i solve

First convert all of the fractions into the same denominator. 1/3 = 2/6. Add the new fraction of history books and the fraction for english books. 2/6 + 1/6 = 3/6. Subtract the total from 1 or 6/6. 6/6 - 3/6 = 3/6. The answer is 3/6 or 1/2 when reduced. 50% or 1/2 of the books are science books.