Question

After reading a book for English class, 100 students were asked

whether or not they enjoyed it. Nine twenty-fifths of the class did not
like the book. How many students liked the book?

Answer 1

Explanation:

9/25 of 100 did not like the book.

so, (25-9)/25 of 100 liked the book (because 25/25 is the whole 100 students).

the corresponding number of students we get

(25-9)/25 × 100 = 16/25 × 100 = 16 × 4 = 64

so, 64 students liked the book.