Names | Number of glass bottles |
Jonathan | 8 |
Samantha | j |
Bryan | 5 + 7 j |
The table shows the number of glass bottles collected by 3 students.
- Find the total number of glass bottles Jonathan, Samantha and Bryan collected. Express the answer in terms of j in the simplest form.
- If j = 7, find the average number of glass bottles the 3 students collected.