Let price of 1 soup be "x" and 1 stew be "y".
4 soup and 4 stew is $31, thus we can write:

Also, given
2 soup and 1 stew costs $12.25, thus we can write:

Let' solve this for y and substitute it back to Equation 1. Then we will solve for x. The process is shown below:

Substituting,

Finding y:

Thus,
Answer:
Each order of Soup = $4.50
Each order of Stew = $3.25