Final answer:
The designation '21/25' on a package of shrimp indicates the number of shrimp per pound, not the weight of each individual shrimp. The correct weight of one shrimp from a '21/25' designation would be less than 1¼ ounces. Michaela will have enough shrimp for her party as she has 80 ounces and only needs 70 ounces for 10 guests.
Step-by-step explanation:
The statement that shrimp designated as "21/25" weigh about 1¼ oz each is True. The numbers "21/25" on a package of shrimp indicate that you will get between 21 and 25 shrimp per pound. Therefore, if you have one pound divided by 22 (the average of 21 and 25), this gives you an approximate weight per shrimp. Since there are 16 ounces in a pound, if you divide 16 ounces by 22 shrimp, you end up with approximately 0.727 ounces per shrimp, which is much less than 1¼ ounces. Thus, the statement in the question is False.
When considering Michaela's party, we find that she has 5 pounds of shrimp. Converting 5 pounds to ounces gives us 5 pounds × 16 ounces/pound = 80 ounces of shrimp. If each of the 10 people at her party consumes 7 ounces, the total shrimp needed will be 10 people × 7 ounces/person = 70 ounces of shrimp. Since Michaela has 80 ounces of shrimp, she will have enough for her party as 80 ounces is greater than 70 ounces.