Names | Number of glass bottles |
Henry | 4 |
Evan | r |
Joseph | 8 + 8 r |
The table shows the number of glass bottles collected by 3 pupils.
- Find the total number of glass bottles Henry, Evan and Joseph collected. Express the answer in terms of r in the simplest form.
- If r = 10, find the average number of glass bottles the 3 pupils collected.