A 2016 Pew Research poll asked respondents about their reading habits during the past year. The results are shown in the table.
Read no books                                  . . . . . . . . . . . . . . . . 26%
Read both print and digital books . . . . . . . . . . . . . . . . 28%
Read digital only                               . . . . . . . . . . . . . . . .   6%
Read print only                                 . . . . . . . . . . . . . . . . 38%
a. What percentage of those surveyed had read at least one digital book in the past year?

b. In a group of 150 people, how many would you expect had not read a book in the past year?