Names | Number of tin cans |
Zoey | 6 |
Nora | r |
Henry | 3 + 8 r |
The table shows the number of tin cans collected by 3 students.
- Find the total number of tin cans Zoey, Nora and Henry collected. Express the answer in terms of r in the simplest form.
- If r = 5, find the average number of tin cans the 3 students collected.