Question

BOOKS The owner of a bookstore

surveyed every 10th person that
entered the store to determine her
customers' preferred type of book.
Of these, 32% preferred mysteries.
If the owner will order 500 new books,
about how many should be mysteries?

Answer 1

10% = 50
30% = 150
1% = 0.5
2% = 1
150 + 1 = 151 books should be mysteries