Names | Number of tin cans |
Michael | 4 |
Stella | z |
Ethan | 2 + 2 z |
The table shows the number of tin cans collected by 3 children.
- Find the total number of tin cans Michael, Stella and Ethan collected. Express the answer in terms of z in the simplest form.
- If z = 10, find the average number of tin cans the 3 children collected.