Answer:
390 seniors
Step-by-step explanation:
13/20=.65
600x .65=390
6.25 : 14
6.25 parts lemonade, 14 parts combined in both recipes
Caden: 3.75 : 8 for his recipe, 3.75 : 14 for all total ingredients
Samntha: 2.5 : 6 for her recipe, 2.5 : 14 for all total ingredients