Question

A survey of 100 people who volunteered information about their reading habits showed that
75 read newspaper daily
35 read books at least once a week
45 read magazines regularly
25 read both newspapers and books
15 read both books and magazines
10 read newspapers, books, and magazines

a) Construct a Venn diagram to determine the maximum number of people in the survey who read both newspapers and magazines.

b) Explain why you can't determine exactly how many surveyed read both newspapers and magazines.

I really need help with this question

Math type: It's data management