Question

There were 1125 books sold last week at Sid's Bookstore. The circle graph below summarizes these books by genre. The central angle for the Mystery slice is 100.8° . How many of the books sold were Mystery books?

Answer 1

100.8/360 (to work out percentage of circle therefore percent of 1125 books)
= 0.28
= 28%

0.28 x 1125
= 315 books sold were Mystery books