Hey!
Let's see here. To solve this problem we need to make start off by finding out how many aluminum cans Ariel and Marian collected individually.
Ariel - 76
Marian - 88
Now that we know that, we need to add them together. The reason we're adding them, is because the problem says 'all together' this is generally a key word that tells you you must add.
76 + 88 = 164.
So, Ariel and Marian collected 164 aluminum cans all together.
Hope this helps!
- Lindsey Frazier ♥