Question

Happy juice is on sale in the 3-quart 8-ounce size for $7.28 .The sale price for super juice in the 2-quart 9-ounce size is $5.84.Which brand is more expensive per ounce?

Answer 1

Start with
one quart = 32 oz

So
3 qt 8 oz = 3+8/32 qt = 3.25 qt
2 qt 9 oz = 2+9/32 qt = 2.28125 qt

Unit cost of Happy Juice = $7.28/3.25 qt = $2.24 per quart
Unit cost of Super Juice = $5.84/2.28125 qt = $2.56 per quart

Leave it to you to decide which juice is more expensive.