Answer:
a)

b)

Explanation:
Total Juices box = 100
Juices boxed taken = 100 - 23 = 77
Juices boxes remaining = 23
![\rule[225]{225}{2}](https://img.qammunity.org/2021/formulas/chemistry/middle-school/ri1osubq0ul0fyszs3s2hvchlv85n22xxb.png)
Ratio of juice boxes taken to total juice boxes:
= 77 : 100
![\rule[225]{225}{2}](https://img.qammunity.org/2021/formulas/chemistry/middle-school/ri1osubq0ul0fyszs3s2hvchlv85n22xxb.png)
Ratio of juice boxes remaining, to juice boxes taken:
= 23 : 77
![\rule[225]{225}{2}](https://img.qammunity.org/2021/formulas/chemistry/middle-school/ri1osubq0ul0fyszs3s2hvchlv85n22xxb.png)
Hope this helped!
~AH1807