Abby fills 8-ounce bottles with the bubble mix from 1 of the tubs. what is the greatest number of 8-ounce bottles that can be filled with bubble mix from 1 of the tubs

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?