Answer:
each ouce is worth 25 cents
solution
in order to solve this you need to create proportions so
10 ounces
per $2.50
well you want this to be a unit rate so you would have
10 ounces = 1 ounce
2.50 x
to get to the unit rate, you can see that you divided 10 from 10 ounces so you would do the same to the bottom ...
2.50/10 which is equal to 0.25.