Names | Number of cardboard |
Nora | 7 |
Lucy | b |
Julie | 2 + 9 b |
The table shows the number of cardboard collected by 3 children.
- Find the total number of cardboard Nora, Lucy and Julie collected. Express the answer in terms of b in the simplest form.
- If b = 3, find the average number of cardboard the 3 children collected.