A certain shampoo is available in two sizes. A -ounce bottle costs . A -ounce bottle costs . Find the unit price for each size. Then state which size is the better buy based on the unit price.

Answer 1

The Price of each divided by the Amount of ounce

_{A- 8 ounces is $2}

B- 20 ounces is $3

2/8=.25

3/20=.15

B is the better buy