ANSWER:
80 portion
STEP-BY-STEP EXPLANATION:
What we must do in this case is to convert the number of pounds to ounces, knowing that 1 pound is equal to 16 ounces.
[tex]25\text{ lb}\cdot\frac{16\text{ oz}}{1\text{ lb}}=400\text{ oz}[/tex]Now to calculate the number of portion, we must calculate the quotient between the total in ounces tomatoes and the amount per portion:
[tex]\frac{400}{5}=80[/tex]