To find out how many teaspoons of oregano are needed for a single can of tomatoes, you can divide the total amount of oregano by the total number of cans of tomatoes.
You have:
- 48 teaspoons of oregano
- 12 cans of tomatoes
Now, divide the oregano by the number of cans:
\[ \text{Teaspoons of oregano per can} = \frac{48 \text{ teaspoons}}{12 \text{ cans}} = 4 \text{ teaspoons per can} \]
So, you need 4 teaspoons of oregano for a single can of tomatoes.