Holly G. answered 06/19/21
Patient Tutor with Experience in STEM, Humanities, and ACT Prep
Fractions can be thought of as the number you have/the total number. In the first part of this question, you would do the number of years you're working with/the number of years in a century. There are 100 years in a century.
For the next part of the question, we're working with eggs. You will do the number of eggs you're working with/the total number of eggs. The total number of eggs is a dozen. A dozen is 12 eggs.
Hopefully this gives you enough pointers to answer the question!