A.3.1.1 Utensils and Paper Preferences

Several students are surveyed about whether they prefer writing with a pen or a pencil and they are also asked whether they prefer lined paper or unlined paper. Some of the results are:

• The survey included 100 different students.
• 40 students said they prefer using pen more than pencil.
• 45 students said they prefer using unlined paper more than lined paper.
• 10 students said they prefer lined paper and pen.
• 45 student said they prefer pencil and lined paper.

2. How many students prefer using pen and unlined paper? 

3. How many students prefer using pencil and unlined paper?