Answer :

162/9 = 18 water bottles per case or

18:1

To find the unit rate, we must follow the following procedure:

Divide the total number of water bottles into case numbers.

We have then:

[tex] R =\frac{162}{9} [/tex]

Rewriting the unit rate we have:

[tex] R = 18 [/tex]

Answer:

The unit rate of bottles per case is given by:

[tex] R = 18 [/tex]