Answer:
Anna's unit rate is 123 to 1
Caroline's unit rate is 44 to 1
Anna can type faster
Explanation:
For Caroline, you have 220 to 5. You need that 5 to be 1. So, you divide it by 5, however you need to do the same for the 220. 220 divided by 5 is 44. Hope this helps :) (Tell me if i'm wrong)