Question

A 1.8 ounce jar of cinnamon costs $4.05.what is the cost per ounce?

Answer 1

$4.05/1.8

$2.25

the cost per ounce is $2.25

Answer 2

If a 1.8 ounce jar costs $4.05, you want to do $4.05 divided by 1.8.  That will give you the cost per ounce.  

$4.05 / 1.8 = $2.25 per ounce.