Then answer would be 200 ounces. To solve that you would set up your formula 1 pound is equal to 16 ounces. So you know how many pounds you have but not how many ounces. So using the same formula replace the pounds value with 12.5. After doing that look at the 1 pound to 12.5 pounds. How much do you multiply? You multiply 12.5. So to keep it equal you would multiply 16 with 12.5 which is 200 ounces.
Hope this helps!